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hmmjava源代码,java

java计算器的源代码

import java.awt.*;

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import java.awt.event.*;

import java.lang.*;

import javax.swing.*;

public class Counter extends Frame

{

//声明三个面板的布局

GridLayout gl1,gl2,gl3;

Panel p0,p1,p2,p3;

JTextField tf1;

TextField tf2;

Button b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,b15,b16,b17,b18,b19,b20,b21,b22,b23,b24,b25,b26;

StringBuffer str;//显示屏所显示的字符串

double x,y;//x和y都是运算数

int z;//Z表示单击了那一个运算符.0表示"+",1表示"-",2表示"*",3表示"/"

static double m;//记忆的数字

public Counter()

{

gl1=new GridLayout(1,4,10,0);//实例化三个面板的布局

gl2=new GridLayout(4,1,0,15);

gl3=new GridLayout(4,5,10,15);

tf1=new JTextField(27);//显示屏

tf1.setHorizontalAlignment(JTextField.RIGHT);

tf1.setEnabled(false);

tf1.setText("0");

tf2=new TextField(10);//显示记忆的索引值

tf2.setEditable(false);

//实例化所有按钮、设置其前景色并注册监听器

b0=new Button("Backspace");

b0.setForeground(Color.red);

b0.addActionListener(new Bt());

b1=new Button("CE");

b1.setForeground(Color.red);

b1.addActionListener(new Bt());

b2=new Button("C");

b2.setForeground(Color.red);

b2.addActionListener(new Bt());

b3=new Button("MC");

b3.setForeground(Color.red);

b3.addActionListener(new Bt());

b4=new Button("MR");

b4.setForeground(Color.red);

b4.addActionListener(new Bt());

b5=new Button("MS");

b5.setForeground(Color.red);

b5.addActionListener(new Bt());

b6=new Button("M+");

b6.setForeground(Color.red);

b6.addActionListener(new Bt());

b7=new Button("7");

b7.setForeground(Color.blue);

b7.addActionListener(new Bt());

b8=new Button("8");

b8.setForeground(Color.blue);

b8.addActionListener(new Bt());

b9=new Button("9");

b9.setForeground(Color.blue);

b9.addActionListener(new Bt());

b10=new Button("/");

b10.setForeground(Color.red);

b10.addActionListener(new Bt());

b11=new Button("sqrt");

b11.setForeground(Color.blue);

b11.addActionListener(new Bt());

b12=new Button("4");

b12.setForeground(Color.blue);

b12.addActionListener(new Bt());

b13=new Button("5");

b13.setForeground(Color.blue);

b13.addActionListener(new Bt());

b14=new Button("6");

b14.setForeground(Color.blue);

b14.addActionListener(new Bt());

b15=new Button("*");

b15.setForeground(Color.red);

b15.addActionListener(new Bt());

b16=new Button("%");

b16.setForeground(Color.blue);

b16.addActionListener(new Bt());

b17=new Button("1");

b17.setForeground(Color.blue);

b17.addActionListener(new Bt());

b18=new Button("2");

b18.setForeground(Color.blue);

b18.addActionListener(new Bt());

b19=new Button("3");

b19.setForeground(Color.blue);

b19.addActionListener(new Bt());

b20=new Button("-");

b20.setForeground(Color.red);

b20.addActionListener(new Bt());

b21=new Button("1/X");

b21.setForeground(Color.blue);

b21.addActionListener(new Bt());

b22=new Button("0");

b22.setForeground(Color.blue);

b22.addActionListener(new Bt());

b23=new Button("+/-");

b23.setForeground(Color.blue);

b23.addActionListener(new Bt());

b24=new Button(".");

b24.setForeground(Color.blue);

b24.addActionListener(new Bt());

b25=new Button("+");

b25.setForeground(Color.red);

b25.addActionListener(new Bt());

b26=new Button("=");

b26.setForeground(Color.red);

b26.addActionListener(new Bt());

//实例化四个面板

p0=new Panel();

p1=new Panel();

p2=new Panel();

p3=new Panel();

//创建一个空字符串缓冲区

str=new StringBuffer();

//添加面板p0中的组件和设置其在框架中的位置和大小

p0.add(tf1);

p0.setBounds(10,25,300,40);

//添加面板p1中的组件和设置其在框架中的位置和大小

p1.setLayout(gl1);

p1.add(tf2);

p1.add(b0);

p1.add(b1);

p1.add(b2);

p1.setBounds(10,65,300,25);

//添加面板p2中的组件并设置其的框架中的位置和大小

p2.setLayout(gl2);

p2.add(b3);

p2.add(b4);

p2.add(b5);

p2.add(b6);

p2.setBounds(10,110,40,150);

//添加面板p3中的组件并设置其在框架中的位置和大小

p3.setLayout(gl3);//设置p3的布局

p3.add(b7);

p3.add(b8);

p3.add(b9);

p3.add(b10);

p3.add(b11);

p3.add(b12);

p3.add(b13);

p3.add(b14);

p3.add(b15);

p3.add(b16);

p3.add(b17);

p3.add(b18);

p3.add(b19);

p3.add(b20);

p3.add(b21);

p3.add(b22);

p3.add(b23);

p3.add(b24);

p3.add(b25);

p3.add(b26);

p3.setBounds(60,110,250,150);

//设置框架中的布局为空布局并添加4个面板

setLayout(null);

add(p0);

add(p1);

add(p2);

add(p3);

setResizable(false);//禁止调整框架的大小

//匿名类关闭窗口

addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e1)

{

System.exit(0);

}

});

setBackground(Color.lightGray);

setBounds(100,100,320,280);

setVisible(true);

}

//构造监听器

class Bt implements ActionListener

{

public void actionPerformed(ActionEvent e2)

{

try{

if(e2.getSource()==b1)//选择"CE"清零

{

tf1.setText("0");//把显示屏清零

str.setLength(0);//清空字符串缓冲区以准备接收新的输入运算数

}

else if(e2.getSource()==b2)//选择"C"清零

{

tf1.setText("0");//把显示屏清零

str.setLength(0);

}

else if(e2.getSource()==b23)//单击"+/-"选择输入的运算数是正数还是负数

{

x=Double.parseDouble(tf1.getText().trim());

tf1.setText(""+(-x));

}

else if(e2.getSource()==b25)//单击加号按钮获得x的值和z的值并清空y的值

{

x=Double.parseDouble(tf1.getText().trim());

str.setLength(0);//清空缓冲区以便接收新的另一个运算数

y=0d;

z=0;

}

else if(e2.getSource()==b20)//单击减号按钮获得x的值和z的值并清空y的值

{

x=Double.parseDouble(tf1.getText().trim());

str.setLength(0);

y=0d;

z=1;

}

else if(e2.getSource()==b15)//单击乘号按钮获得x的值和z的值并清空y的值

{

x=Double.parseDouble(tf1.getText().trim());

str.setLength(0);

y=0d;

z=2;

}

else if(e2.getSource()==b10)//单击除号按钮获得x的值和z的值并空y的值

{

x=Double.parseDouble(tf1.getText().trim());

str.setLength(0);

y=0d;

z=3;

}

else if(e2.getSource()==b26)//单击等号按钮输出计算结果

{

str.setLength(0);

switch(z)

{

case 0 : tf1.setText(""+(x+y));break;

case 1 : tf1.setText(""+(x-y));break;

case 2 : tf1.setText(""+(x*y));break;

case 3 : tf1.setText(""+(x/y));break;

}

}

else if(e2.getSource()==b24)//单击"."按钮输入小数

{

if(tf1.getText().trim().indexOf(′.′)!=-1)//判断字符串中是否已经包含了小数点

{

}

else//如果没数点有小

{

if(tf1.getText().trim().equals("0"))//如果初时显示为0

{

str.setLength(0);

tf1.setText((str.append("0"+e2.getActionCommand())).toString());

}

else if(tf1.getText().trim().equals(""))//如果初时显示为空则不做任何操作

{

}

else

{

tf1.setText(str.append(e2.getActionCommand()).toString());

}

}

y=0d;

}

else if(e2.getSource()==b11)//求平方根

{

x=Double.parseDouble(tf1.getText().trim());

tf1.setText("数字格式异常");

if(x0)

tf1.setText("负数没有平方根");

else

tf1.setText(""+Math.sqrt(x));

str.setLength(0);

y=0d;

}

else if(e2.getSource()==b16)//单击了"%"按钮

{

x=Double.parseDouble(tf1.getText().trim());

tf1.setText(""+(0.01*x));

str.setLength(0);

y=0d;

}

else if(e2.getSource()==b21)//单击了"1/X"按钮

{

x=Double.parseDouble(tf1.getText().trim());

if(x==0)

{

tf1.setText("除数不能为零");

}

else

{

tf1.setText(""+(1/x));

}

str.setLength(0);

y=0d;

}

else if(e2.getSource()==b3)//MC为清除内存

{

m=0d;

tf2.setText("");

str.setLength(0);

}

else if(e2.getSource()==b4)//MR为重新调用存储的数据

{

if(tf2.getText().trim()!="")//有记忆数字

{

tf1.setText(""+m);

}

}

else if(e2.getSource()==b5)//MS为存储显示的数据

{

m=Double.parseDouble(tf1.getText().trim());

tf2.setText("M");

tf1.setText("0");

str.setLength(0);

}

else if(e2.getSource()==b6)//M+为将显示的数字与已经存储的数据相加要查看新的数字单击MR

{

m=m+Double.parseDouble(tf1.getText().trim());

}

else//选择的是其他的按钮

{

if(e2.getSource()==b22)//如果选择的是"0"这个数字键

{

if(tf1.getText().trim().equals("0"))//如果显示屏显示的为零不做操作

{

}

else

{

tf1.setText(str.append(e2.getActionCommand()).toString());

y=Double.parseDouble(tf1.getText().trim());

}

}

else if(e2.getSource()==b0)//选择的是“BackSpace”按钮

{

if(!tf1.getText().trim().equals("0"))//如果显示屏显示的不是零

{

if(str.length()!=1)

{

tf1.setText(str.delete(str.length()-1,str.length()).toString());//可能抛出字符串越界异常

}

else

{

tf1.setText("0");

str.setLength(0);

}

}

y=Double.parseDouble(tf1.getText().trim());

}

else//其他的数字键

{

tf1.setText(str.append(e2.getActionCommand()).toString());

y=Double.parseDouble(tf1.getText().trim());

}

}

}

catch(NumberFormatException e){

tf1.setText("数字格式异常");

}

catch(StringIndexOutOfBoundsException e){

tf1.setText("字符串索引越界");

}

}

}

public static void main(String args[])

{

new Counter();

}

}

你在JAVA的环境中运行一下。

这题目也是我的作业,我运行的了。

JAVA代码

session是放到会话中去了,只要你不关闭浏览器,这个session一直存在

sendRedirect是重定向到网页只不过传了个属性

建议用请求转发!!forword

求编写一个超级简单的Java的程序源代码

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class ConstructFrame extends JFrame

{

private static final long serialVersionUID = 1L;

String value1="",result,value2="";

int flag=0,fix=0,sum=1;

Boolean happy;

JTextField text=new JTextField(30);

int flagsum=0;

Container c=getContentPane();

JButton buttonx;

ConstructFrame()

{ super("计算器");

c.setLayout(null);

c.setBackground(Color.blue);

this.setSize(400, 400);

c.add(text);

text.setHorizontalAlignment(JTextField.RIGHT);

final JButton buttonx=new JButton("BackSpace");

c.add(buttonx);

buttonx.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

int count=0;

String temp;

if(flag==0)

{

count=value1.length();

if(count!=1)

temp=value1.substring(0, count-1);

else

temp="0";

value1=temp;

}

else

{

count=value2.length();

if(count!=1)

temp=value2.substring(0, count-1);

else

temp="0";

value2=temp;

}

text.setText(temp);

}

});

final JButton buttony=new JButton("CE");

c.add(buttony);

buttony.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

value1="";

value2="";

flag=0;

text.setText("0");

}

});

final JButton button1=new JButton("1");

c.add(button1);

button1.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+1;

temp=value1;

}

else

{

value2=value2+1;

temp=value2;

}

text.setText(temp);

}

});

final JButton button2=new JButton(" 2 ");

c.add(button2);

button2.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+2;

temp=value1;

}

else

{

value2=value2+2;

temp=value2;

}

text.setText(temp);

}

});

final JButton button3=new JButton("3");

c.add(button3);

button3.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+3;

temp=value1;

}

else

{

value2=value2+3;

temp=value2;

}

text.setText(temp);

}

});

final JButton button4=new JButton("4");

c.add(button4);

button4.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+4;

temp=value1;

}

else

{

value2=value2+4;

temp=value2;

}

text.setText(temp);

}

});

final JButton button5=new JButton("5");

c.add(button5);

button5.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+5;

temp=value1;

}

else

{

value2=value2+5;

temp=value2;

}

text.setText(temp);

}

});

final JButton button6=new JButton("6");

c.add(button6);

button6.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+6;

temp=value1;

}

else

{

value2=value2+6;

temp=value2;

}

text.setText(temp);

}

});

final JButton button7=new JButton("7");

c.add(button7);

button7.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+7;

temp=value1;

}

else

{

value2=value2+7;

temp=value2;

}

text.setText(temp);

}

});

final JButton button8=new JButton("8");

c.add(button8);

button8.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+8;

temp=value1;

}

else

{

value2=value2+8;

temp=value2;

}

text.setText(temp);

}

});

final JButton button9=new JButton("9");

c.add(button9);

button9.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+9;

temp=value1;

}

else

{

value2=value2+9;

temp=value2;

}

text.setText(temp);

}

});

final JButton button0=new JButton("0");

c.add(button0);

button0.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+0;

temp=value1;

}

else

{

value2=value2+0;

temp=value2;

}

text.setText(temp);

}

});

final JButton buttonadd=new JButton(" + ");

c.add(buttonadd);

buttonadd.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=1;

flagsum=0;

}

});

final JButton buttonsubtract=new JButton(" - ");

c.add(buttonsubtract);

buttonsubtract.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=2;

flagsum=0;

}

});

final JButton buttoncheng=new JButton(" * ");

c.add(buttoncheng);

buttoncheng.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=3;

flagsum=0;

}

});

final JButton buttonchu=new JButton(" / ");

c.add(buttonchu);

buttonchu.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

flagsum=0;

fix=4;

}

});

final JButton buttonequal=new JButton(" = ");

c.add(buttonequal);

buttonequal.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

double temp1,temp2;

double temp=0;

flagsum=0;

temp1=Double.parseDouble(value1);

temp2=Double.parseDouble(value2);

flag=0;

switch(fix)

{

case 1: temp=temp1+temp2;break;

case 2: temp=temp1-temp2;break;

case 3: temp=temp1*temp2;break;

case 4: temp=temp1/temp2;break;

}

result=Double.valueOf(temp).toString();

value1=result;

value2="";

flag=1;

text.setText(result);

}

});

final JButton buttonpoint=new JButton(".");

c.add(buttonpoint);

buttonpoint.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{ if(flagsum==0)

{

String temp;

if(flag==0 )

{

value1=value1+".";

temp=value1;

}

else

{

value2=value2+".";

temp=value2;

}

flagsum=1;

text.setText(temp);

}

}

});

JButton buttonz=new JButton("Start");

c.add(buttonz);

buttonz.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{ if(sum%2==1)

{

happy=true;

text.setText("0.");

flag=0;

}

else

{

happy=false;

value1="";

value2="";

text.setText("");

}

text.setEnabled(happy);

button1.setEnabled(happy);

button2.setEnabled(happy);

button3.setEnabled(happy);

button4.setEnabled(happy);

button5.setEnabled(happy);

button6.setEnabled(happy);

button7.setEnabled(happy);

button8.setEnabled(happy);

button9.setEnabled(happy);

button0.setEnabled(happy);

buttonx.setEnabled(happy);

buttony.setEnabled(happy);

buttonadd.setEnabled(happy);

buttonsubtract.setEnabled(happy);

buttonpoint.setEnabled(happy);

buttonequal.setEnabled(happy);

buttoncheng.setEnabled(happy);

buttonchu.setEnabled(happy);

sum++;

}

});

button1.setEnabled(false);

button2.setEnabled(false);

button3.setEnabled(false);

button4.setEnabled(false);

button5.setEnabled(false);

button6.setEnabled(false);

button7.setEnabled(false);

button8.setEnabled(false);

button9.setEnabled(false);

button0.setEnabled(false);

buttonx.setEnabled(false);

buttony.setEnabled(false);

buttonadd.setEnabled(false);

buttonsubtract.setEnabled(false);

buttonpoint.setEnabled(false);

buttonequal.setEnabled(false);

buttoncheng.setEnabled(false);

buttonchu.setEnabled(false);

text.setEnabled(false);

text.setBounds(20, 20, 200, 40);

buttonx.setBounds(20, 60,100, 40);

buttony.setBounds(140, 60,100, 40);

buttonz.setBounds(260, 60,80, 40);

button1.setBounds(20, 120,60, 40);

button2.setBounds(100, 120,60, 40);

button3.setBounds(180, 120,60, 40);

buttonadd.setBounds(260, 120,60, 40);

button4.setBounds(20, 180,60, 40);

button5.setBounds(100, 180,60, 40);

button6.setBounds(180, 180,60, 40);

buttonsubtract.setBounds(260, 180,60, 40);

button7.setBounds(20, 240,60, 40);

button8.setBounds(100, 240,60, 40);

button9.setBounds(180, 240,60, 40);

buttoncheng.setBounds(260,240,60,40);

button0.setBounds(20, 300,60, 40);

buttonpoint.setBounds(100, 300, 60, 40);

buttonequal.setBounds(180,300,60, 40);

buttonchu.setBounds(260, 300,60, 40);

setVisible(true);

}

class MYMouseEvent extends MouseAdapter

{

public void mousePressed(MouseEvent e)

{

value1=e.toString();

text.setText(value1);

}

}

}

class Calutator

{

public static void main(String[] args)

{

new ConstructFrame();

}

}

你自己慢慢的看吧!

java 源代码 基础点的 谢谢

package com.regex;

import java.io.*;

import java.net.URLDecoder;

import java.util.regex.*;

public class Regex {

private int REMARK=0;

private int LOGIC=0;

private int PHYSIC=0;

boolean start=false;

/**

* @param args

*/

public static void main(String[] args) { //测试方法

// TODO Auto-generated method stub

Regex re=new Regex();

re.regCount("Regex.java");

System.out.println("remark Line: "+re.REMARK);

System.out.println("logic Line: "+re.LOGIC);

System.out.println("physic Line: "+re.PHYSIC);

}/**

* @author BlueDance

* @param s

* @deprecated count

*/

public void regCount(String s){

String url=null;

try {

url=URLDecoder.decode(this.getClass().getResource(s).getPath(),"UTF-8");

} catch (Exception e) {

e.printStackTrace();

// TODO: handle exception

}

try {

BufferedReader br=new BufferedReader(new FileReader(new File(url)));

String s1=null;

while((s1=br.readLine())!=null){

PHYSIC++;

if(CheckChar(s1)==1){

REMARK++;

System.out.println("纯注释行:"+s1);

}

if(CheckChar(s1)==2){

LOGIC++;

REMARK++;

System.out.println("非纯注释行:"+s1);

}

if(CheckChar(s1)==3)

LOGIC++;

}

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}catch(IOException e){

e.printStackTrace();

}

}

/**

*

* @param s

* @return int

* @version check s

*/

public int CheckChar(String s){

String s1=null;

if(s!=null)

s1=s.trim();

//System.out.println(regCheck(s1,re));

if(regCheck(s1,"(//.*)")) //判断//开头的为纯注释行

return 1;

if(regCheck(s1,"(.*[;{})] *//.*)")) //判断不是//开头的非纯注释行

return 2;

if(regCheck(s1,"(//*.*)")){ //判断/*开头的纯注释行

start=true;

return 1;

}

if(regCheck(s1,"(.*[;{})]//*.*)")){ //判断不是/*开头的非纯注释行

start=true;

return 2;

}

if(regCheck(s1,"(.* */*/)")){ //判断*/结尾的纯注释行

start=false;

return 1;

}

if(regCheck(s1,"(.* */*/.*)")!strCheck(s1)){ //判断不是*/结尾的非纯注释行

if(strCheck(s1)){

start=false;

return 2;

}

}

if(start==true) //状态代码,start即/*开始时start=true*/结束时为false

return 1;

return 3;//ssssllll

}//aeee

/**

*

* @param s

* @param re

* @return boolean

*/

public boolean regCheck(String s,String re){ //正则表达试判断方法

return Pattern.matches(re,s);

}

public boolean strCheck(String s){ //中间有*/的字符判断 此方法最关键

if(s.indexOf("*/")0){

int count=0;

String y[]=s.split("/*/");

boolean boo[]=new boolean[y.length];

for (int i = 0; i y.length-1; i++) {

char c[]=y[i].toCharArray();

for (int j = 0; j c.length; j++) {

if(c[j]=='\\'c[j+1]=='"'){

count++;

}

}

if(count%2==0){

if(countNumber("\"",y[i])%2!=0){

boo[i]=true;

}else{

boo[i]=false;

}

}else{

if(countNumber("\"",y[i])%2==0){

boo[i]=true;

}else{

boo[i]=false;

}

}

}

for(int i=0;iboo.length;i++){

if(!boo[i])

return false;

}

return true;

}

return false;

}

public int countNumber(String s,String y){ //此方法为我前面写的字符串出现次数统计方法,不懂的可以看我前面的文章

int count=0;

String [] k=y.split(s);

if(y.lastIndexOf(s)==(y.length()-s.length()))

count=k.length;

else

count=k.length-1;

if(count==0)

System.out.println ("字符串\""+s+"\"在字符串\""+y+"\"没有出现过");

else

return count;

return -1;

}

}

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class GoodLucky extends JFrame implements ActionListener{

JTextField tf = new JTextField(); //实例化一个文本域

//设置两个按钮

JButton b1 = new JButton("开始");

JButton b2 = new JButton("停止");

boolean isGo = false;

//构造函数

public GoodLucky(){

b1.setActionCommand("start");//在开始按钮上设置一个动作监听 start

JPanel p = new JPanel(); //实例化一个可视化容器

//将两个按钮添加到可视化容器上面,用add方法

p.add(b1);

p.add(b2);

//在两个按钮上增加监听的属性,自动调用下面的监听处理方法actionPerformed(ActionEvent e),如果要代码有更好的可读性,可用内部类实现动作

//监听处理。

b1.addActionListener(this);

b2.addActionListener(this);

//将停止按钮设置为不可编辑(即不可按的状态)

b2.setEnabled(false);

this.getContentPane().add(tf,"North"); //将上面的文本域放在面板的北方,也就是上面(上北下南左西右东)

this.getContentPane().add(p,"South"); //将可视化容器pannel放在南边,也就是下面

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //设置用户在此窗体上发起 "close" 时默认执行的操作,参数EXIT_ON_CLOSE是使用 System exit 方法退出应用程序。仅在应用程序中使用

this.setSize(300,200); //设置面板大小,宽和高

this.setLocation(300,300); //设置面板刚开始的出现的位置

Cursor cu = new Cursor(Cursor.HAND_CURSOR); //用指定名称创建一个新的定制光标对象,参数表示手状光标类型

this.setCursor(cu); //为指定的光标设置光标图像,即设置光标图像为上面所创建的手状光标类型

this.setVisible(true); //将面板可视化设置为true,即可视,如果为false,即程序运行时面板会隐藏

tf.setText("welcome you! "); //设置面板的标题为欢迎

this.go(); //调用go方法

}

public void go(){

while(true){ //这里是死循环,也就是说用户不点击停止按钮的话他一直循环出现随机数,直到用户点击停止按钮循环才能推出,具体流程在actionPerformed方法中控制。

if(isGo == true){ //上面所定义的isGo的初始值为false,所以程序第一次到此会跳过

String s = ""; //设置空字符串

for(int j = 1; j = 7;j++){ //产生7个随机数

int i = (int)(Math.random() * 36) + 1;//每个随机数产生方式,这里定义灵活,可以自由定义随机数产生的方式

if(i 10){

s = s + " 0" + i; //如果产生的随机数小于10的话做处理:这里就牵扯到一个重要的概念,简单叙述一下:

/*

当一个字符串与一个整型数项相加的意思是连接,上面的s = s + " 0" + i的意思是字符串s链接0再连接整型i值,而不会导致0和整型的i相加,

产生的效果为s0i,由于s为空字符串(上面定义过的),所以当i小于零时,在个位数前面加上0,比如产生的随机数i为7的话,显示效果为 07.

*/

}else{

s = s + " " + i; //如果产生的随机数比10打的话,那么加上空格显示,即数字和数字之间有个空格

}

//以上循环循环七次,以保证能出现7个随机数

}

tf.setText(s); //将产生的随机数全部显示在文本域上,用文本域对象tf调用它的设置文本的方法setText(String)实现。

}

//以下为线程延迟

try{

Thread.sleep(10); //线程类同步方法sleep,睡眠方法,括号里的单位为ms。

}catch(java.lang.InterruptedException e){

e.printStackTrace(); //异常捕获,不用多说。

}

}

}

//以下是上面设置的事件监听的具体处理办法,即监听时间处理方法,自动调用

public void actionPerformed(ActionEvent e){ //传入一个动作事件的参数e

String s = e.getActionCommand(); //设置字符串s来存储获得动作监听,上面的start

/*

以下这个条件语句块的作用为:用户点击开始后(捕获start,用方法getActionCommand()),将命令触发设置为true,从而执行上面的go方法中的循环体(因为循环体中要求isGo参数为true,而初始为false)。

执行循环快产生随机数,并将开始按钮不可编辑化,而用户只可以使用停止按钮去停止。如果用户按下停止时,也就是没有传入参数“start”的时候,

执行else语句块中的语句,isGo设置为false,将不执行上面go中的循环语句块,从而停止产生随机数,并显示,并且把开始按钮设置为可用,而把

停止按钮设置为不可用,等待用户按下开始再去开始新一轮循环产生随机数。

*/

if(s.equals("start")){ //如果捕获到start,也就是用户触发了动作监听器,那么下面处理

isGo = true; //设置isGo为true

b1.setEnabled(false); //将开始按钮设置为不可用

b2.setEnabled(true); //将停止按钮设置为可用

}else{

isGo = false; //将isGo设置为false,isGo为循环标志位

b2.setEnabled(false); //设置停止按钮为不可用(注意看是b2,b2是停止按钮)

b1.setEnabled(true); //设置开始按钮为可用

}

}

public static void main(String[] args){

new GoodLucky(); //产生类的实例,执行方法

}

}

求用JAVA编写俄罗斯方块游戏的源代码

俄罗斯方块——java源代码提供 import java.awt.*; import java.awt.event.*; //俄罗斯方块类 public class ERS_Block extends Frame{ public static boolean isPlay=false; public static int level=1,score=0; public static TextField scoreField,levelField; public static MyTimer timer; GameCanvas gameScr; public static void main(String[] argus){ ERS_Block ers = new ERS_Block("俄罗斯方块游戏 V1.0 Author:Vincent"); WindowListener win_listener = new WinListener(); ers.addWindowListener(win_listener); } //俄罗斯方块类的构造方法 ERS_Block(String title){ super(title); setSize(600,480); setLayout(new GridLayout(1,2)); gameScr = new GameCanvas(); gameScr.addKeyListener(gameScr); timer = new MyTimer(gameScr); timer.setDaemon(true); timer.start(); timer.suspend(); add(gameScr); Panel rightScr = new Panel(); rightScr.setLayout(new GridLayout(2,1,0,30)); rightScr.setSize(120,500); add(rightScr); //右边信息窗体的布局 MyPanel infoScr = new MyPanel(); infoScr.setLayout(new GridLayout(4,1,0,5)); infoScr.setSize(120,300); rightScr.add(infoScr); //定义标签和初始值 Label scorep = new Label("分数:",Label.LEFT); Label levelp = new Label("级数:",Label.LEFT); scoreField = new TextField(8); levelField = new TextField(8); scoreField.setEditable(false); levelField.setEditable(false); infoScr.add(scorep); infoScr.add(scoreField); infoScr.add(levelp); infoScr.add(levelField); scorep.setSize(new Dimension(20,60)); scoreField.setSize(new Dimension(20,60)); levelp.setSize(new Dimension(20,60)); levelField.setSize(new Dimension(20,60)); scoreField.setText("0"); levelField.setText("1"); //右边控制按钮窗体的布局 MyPanel controlScr = new MyPanel(); controlScr.setLayout(new GridLayout(5,1,0,5)); rightScr.add(controlScr); //定义按钮play Button play_b = new Button("开始游戏"); play_b.setSize(new Dimension(50,200)); play_b.addActionListener(new Command(Command.button_play,gameScr)); //定义按钮Level UP Button level_up_b = new Button("提高级数"); level_up_b.setSize(new Dimension(50,200)); level_up_b.addActionListener(new Command(Command.button_levelup,gameScr)); //定义按钮Level Down Button level_down_b =new Button("降低级数"); level_down_b.setSize(new Dimension(50,200)); level_down_b.addActionListener(new Command(Command.button_leveldown,gameScr)); //定义按钮Level Pause Button pause_b =new Button("游戏暂停"); pause_b.setSize(new Dimension(50,200)); pause_b.addActionListener(new Command(Command.button_pause,gameScr)); //定义按钮Quit Button quit_b = new Button("退出游戏"); quit_b.setSize(new Dimension(50,200)); quit_b.addActionListener(new Command(Command.button_quit,gameScr)); controlScr.add(play_b); controlScr.add(level_up_b); controlScr.add(level_down_b); controlScr.add(pause_b); controlScr.add(quit_b); setVisible(true); gameScr.requestFocus(); } } //重写MyPanel类,使Panel的四周留空间 class MyPanel extends Panel{ public Insets getInsets(){ return new Insets(30,50,30,50); } } //游戏画布类 class GameCanvas extends Canvas implements KeyListener{ final int unitSize = 30; //小方块边长 int rowNum; //正方格的行数 int columnNum; //正方格的列数 int maxAllowRowNum; //允许有多少行未削 int blockInitRow; //新出现块的起始行坐标 int blockInitCol; //新出现块的起始列坐标 int [][] scrArr; //屏幕数组 Block b; //对方快的引用 //画布类的构造方法 GameCanvas(){ rowNum = 15; columnNum = 10; maxAllowRowNum = rowNum - 2; b = new Block(this); blockInitRow = rowNum - 1; blockInitCol = columnNum/2 - 2; scrArr = new int [32][32]; } //初始化屏幕,并将屏幕数组清零的方法 void initScr(){ for(int i=0;irowNum;i++) for (int j=0; jcolumnNum;j++) scrArr[j]=0; b.reset(); repaint(); } //重新刷新画布方法 public void paint(Graphics g){ for(int i = 0; i rowNum; i++) for(int j = 0; j columnNum; j++) drawUnit(i,j,scrArr[j]); } //画方块的方法 public void drawUnit(int row,int col,int type){ scrArr[row][col] = type; Graphics g = getGraphics(); tch(type){ //表示画方快的方法 case 0: g.setColor(Color.black);break; //以背景为颜色画 case 1: g.setColor(Color.blue);break; //画正在下落的方块 case 2: g.setColor(Color.magenta);break; //画已经落下的方法 } g.fill3DRect(col*unitSize,getSize().height-(row+1)*unitSize,unitSize,unitSize,true); g.dispose(); } public Block getBlock(){ return b; //返回block实例的引用 } //返回屏幕数组中(row,col)位置的属性值 public int getScrArrXY(int row,int col){ if (row 0 || row = rowNum || col 0 || col = columnNum) return(-1); else return(scrArr[row][col]); } //返回新块的初始行坐标方法 public int getInitRow(){ return(blockInitRow); //返回新块的初始行坐标 } //返回新块的初始列坐标方法 public int getInitCol(){ return(blockInitCol); //返回新块的初始列坐标 } //满行删除方法 void deleteFullLine(){ int full_line_num = 0; int k = 0; for (int i=0;irowNum;i++){ boolean isfull = true; L1:for(int j=0;jcolumnNum;j++) if(scrArr[j] == 0){ k++; isfull = false; break L1; } if(isfull) full_line_num++; if(k!=0 k-1!=i !isfull) for(int j = 0; j columnNum; j++){ if (scrArr[j] == 0) drawUnit(k-1,j,0); else drawUnit(k-1,j,2); scrArr[k-1][j] = scrArr[j]; } } for(int i = k-1 ;i rowNum; i++){ for(int j = 0; j columnNum; j++){ drawUnit(i,j,0); scrArr[j]=0; } } ERS_Block.score += full_line_num; ERS_Block.scoreField.setText(""+ERS_Block.score); } //判断游戏是否结束方法 boolean isGameEnd(){ for (int col = 0 ; col columnNum; col ++){ if(scrArr[maxAllowRowNum][col] !=0) return true; } return false; } public void keyTyped(KeyEvent e){ } public void keyReleased(KeyEvent e){ } //处理键盘输入的方法 public void keyPressed(KeyEvent e){ if(!ERS_Block.isPlay) return; tch(e.getKeyCode()){ case KeyEvent.VK_DOWN:b.fallDown();break; case KeyEvent.VK_LEFT:b.leftMove();break; case KeyEvent.VK_RIGHT:b.rightMove();break; case KeyEvent.VK_SPACE:b.leftTurn();break; } } } //处理控制类 class Command implements ActionListener{ static final int button_play = 1; //给按钮分配编号 static final int button_levelup = 2; static final int button_leveldown = 3; static final int button_quit = 4; static final int button_pause = 5; static boolean pause_resume = true; int curButton; //当前按钮 GameCanvas scr; //控制按钮类的构造方法 Command(int button,GameCanvas scr){ curButton = button; this.scr=scr; } //按钮执行方法 public void actionPerformed (ActionEvent e){ tch(curButton){ case button_play:if(!ERS_Block.isPlay){ scr.initScr(); ERS_Block.isPlay = true; ERS_Block.score = 0; ERS_Block.scoreField.setText("0"); ERS_Block.timer.resume(); } scr.requestFocus(); break; case button_levelup:if(ERS_Block.level 10){ ERS_Block.level++; ERS_Block.levelField.setText(""+ERS_Block.level); ERS_Block.score = 0; ERS_Block.scoreField.setText(""+ERS_Block.score); } scr.requestFocus(); break; case button_leveldown:if(ERS_Block.level 1){ ERS_Block.level--; ERS_Block.levelField.setText(""+ERS_Block.level); ERS_Block.score = 0; ERS_Block.scoreField.setText(""+ERS_Block.score); } scr.requestFocus(); break; case button_pause:if(pause_resume){ ERS_Block.timer.suspend(); pause_resume = false; }else{ ERS_Block.timer.resume(); pause_resume = true; } scr.requestFocus(); break; case button_quit:System.exit(0); } } } //方块类 class Block { static int[][] pattern = { {0x0f00,0x4444,0x0f00,0x4444},//用十六进至表示,本行表示长条四种状态 {0x04e0,0x0464,0x00e4,0x04c4}, {0x4620,0x6c00,0x4620,0x6c00}, {0x2640,0xc600,0x2640,0xc600}, {0x6220,0x1700,0x2230,0x0740}, {0x6440,0x0e20,0x44c0,0x8e00}, {0x0660,0x0660,0x0660,0x0660} }; int blockType; //块的模式号(0-6) int turnState; //块的翻转状态(0-3) int blockState; //快的下落状态 int row,col; //块在画布上的坐标 GameCanvas scr; //块类的构造方法 Block(GameCanvas scr){ this.scr = scr; blockType = (int)(Math.random() * 1000)%7; turnState = (int)(Math.random() * 1000)%4; blockState = 1; row = scr.getInitRow(); col = scr.getInitCol(); } //重新初始化块,并显示新块 public void reset(){ blockType = (int)(Math.random() * 1000)%7; turnState = (int)(Math.random() * 1000)%4; blockState = 1; row = scr.getInitRow(); col = scr.getInitCol(); dispBlock(1); } //实现“块”翻转的方法 public void leftTurn(){ if(assertValid(blockType,(turnState + 1)%4,row,col)){ dispBlock(0); turnState = (turnState + 1)%4; dispBlock(1); } } //实现“块”的左移的方法 public void leftMove(){ if(assertValid(blockType,turnState,row,col-1)){ dispBlock(0); col--; dispBlock(1); } } //实现块的右移 public void rightMove(){ if(assertValid(blockType,turnState,row,col+1)){ dispBlock(0); col++; dispBlock(1); } } //实现块落下的操作的方法 public boolean fallDown(){ if(blockState == 2) return(false); if(assertValid(blockType,turnState,row-1,col)){ dispBlock(0); row--; dispBlock(1); return(true); }else{ blockState = 2; dispBlock(2); return(false); } } //判断是否正确的方法 boolean assertValid(int t,int s,int row,int col){ int k = 0x8000; for(int i = 0; i 4; i++){ for(int j = 0; j 4; j++){ if((int)(pattern[t][s]k) != 0){ int temp = scr.getScrArrXY(row-i,col+j); if (temp0||temp==2) return false; } k = k 1; } } return true; } //同步显示的方法 public synchronized void dispBlock(int s){ int k = 0x8000; for (int i = 0; i 4; i++){ for(int j = 0; j 4; j++){ if(((int)pattern[blockType][turnState]k) != 0){ scr.drawUnit(row-i,col+j,s); } k=k1; } } } } //定时线程 class MyTimer extends Thread{ GameCanvas scr; public MyTimer(GameCanvas scr){ this.scr = scr; } public void run(){ while(true){ try{ sleep((10-ERS_Block.level + 1)*100); } catch(InterruptedException e){} if(!scr.getBlock().fallDown()){ scr.deleteFullLine(); if(scr.isGameEnd()){ ERS_Block.isPlay = false; suspend(); }else scr.getBlock().reset(); } } } } class WinListener extends WindowAdapter{ public void windowClosing (WindowEvent l){ System.exit(0); } } 22

java记事本源代码

给你个做好了的Java的源程序的记事本,自己看看就行了的,不怎么难的···

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import javax.swing.*;

public class MyNotepad implements ActionListener{

private JFrame frame=new JFrame("新记事本");

private JTextArea jta=new JTextArea();

private String result="";

private boolean flag=true;

private File f;

private JButton jb=new JButton("开始");

private JTextField jtf=new JTextField(15);

private JTextField jt=new JTextField(15);

private JButton jbt=new JButton("替换为");

private JButton jba=new JButton("全部替换");

private Icon ic=new ImageIcon("D:\\java课堂笔记\\GUI\\11.gif");

private String value;

private int start=0;

private JFrame jf=new JFrame("查找");

private JFrame jfc=new JFrame("替换");

@Override

public void actionPerformed(ActionEvent e) {

String comm=e.getActionCommand();

if("新建".equals(comm)){

if(!(frame.getTitle().equals("新记事本"))){

if(!flag){

write();

newNew();

}else{

JFileChooser jfc=new JFileChooser("D:\\java课堂笔记");

int returnVal = jfc.showDialog(null,"保存为");

if(returnVal == JFileChooser.APPROVE_OPTION) {//选择文件后再执行下面的语句,保证了程序的健壮性

f=jfc.getSelectedFile();

flag=false;

write();

}

}

}else if(!(jta.getText().isEmpty())){

JFileChooser jfc=new JFileChooser("D:\\java课堂笔记");

int returnVal = jfc.showDialog(null,"保存为");

if(returnVal == JFileChooser.APPROVE_OPTION) {//选择文件后再执行下面的语句,保证了程序的健壮性

f=jfc.getSelectedFile();

flag=false;

write();

newNew();

}

}else{

newNew();

}

}else if("打开".equals(comm)){

JFileChooser jfc=new JFileChooser("D:\\java课堂笔记");

jfc.setDialogType(JFileChooser.OPEN_DIALOG);

int returnVal = jfc.showOpenDialog(null);

if(returnVal == JFileChooser.APPROVE_OPTION) {//选择文件后再执行下面的语句,保证了程序的健壮性

f=jfc.getSelectedFile();

frame.setTitle(f.getName());

result=read();

flag=false;

value=result;

jta.setText(result);

}

}else if("保存".equals(comm)){

JFileChooser jfc=new JFileChooser("D:\\java课堂笔记");

if(flag){

int returnVal = jfc.showDialog(null,"保存为");

if(returnVal == JFileChooser.APPROVE_OPTION) {//选择文件后再执行下面的语句,保证了程序的健壮性

f=jfc.getSelectedFile();

flag=false;

write();

}

}else{

write();

}

}else if("另存".equals(comm)){

JFileChooser jfc=new JFileChooser("D:\\java课堂笔记");

int returnVal = jfc.showDialog(null,"另存");

if(returnVal == JFileChooser.APPROVE_OPTION) {//选择文件后再执行下面的语句,保证了程序的健壮性

f=jfc.getSelectedFile();

write();

}

}else if("退出".equals(comm)){

System.exit(0);

}else if("撤销".equals(comm)){

jta.setText(value);

}else if("剪切".equals(comm)){

value=jta.getText();

jta.cut();

}else if("复制".equals(comm)){

jta.copy();

}else if("粘贴".equals(comm)){

value=jta.getText();

jta.paste();

}else if("删除".equals(comm)){

value=jta.getText();

jta.replaceSelection(null);

}else if("全选".equals(comm)){

jta.selectAll();

}else if("查找".equals(comm)){

value=jta.getText();

jf.add(jtf,BorderLayout.CENTER);

jf.add(jb,BorderLayout.SOUTH);

jf.setLocation(300,300);

jf.pack();

jf.setVisible(true);

jf.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

}else if("替换".equals(comm)){

value=jta.getText();

GridLayout gl=new GridLayout(3,3);

JLabel jl1=new JLabel("查找内容:");

JLabel jl2=new JLabel("替换为:");

jfc.setLayout(gl);

jfc.add(jl1);

jfc.add(jtf);

jfc.add(jb);

jfc.add(jl2);

jfc.add(jt);

jfc.add(jbt);

JLabel jl3=new JLabel();

JLabel jl4=new JLabel();

jfc.add(jl3);

jfc.add(jl4);

jfc.add(jba);

jfc.setLocation(300,300);

jfc.pack();

jfc.setVisible(true);

jfc.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

}else if("版本".equals(comm)){

JDialog jd=new JDialog(frame,"关于对话框");

jd.setSize(200,200);

JLabel l=new JLabel("哈哈哈哈哈哈哈哈哈哈呵呵呵呵呵呵呵呵呵呵呵呵呵");

jd.add(l,BorderLayout.CENTER);

jd.setLocation(100,200);

jd.setSize(300,300);

jd.setVisible(true);

// jd.pack();

jd.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);

}else if("开始".equals(comm)||"下一个".equals(comm)){

String temp=jtf.getText();

int s=value.indexOf(temp,start);

if(value.indexOf(temp,start)!=-1){

jta.setSelectionStart(s);

jta.setSelectionEnd(s+temp.length());

jta.setSelectedTextColor(Color.GREEN);

start=s+1;

jb.setText("下一个");

// value=value.substring(s+temp.length());//不能截取字串

}else {

JOptionPane.showMessageDialog(jf, "查找完毕!", "提示", 0, ic);

jf.dispose();

}

}else if("替换为".equals(comm)){

String temp=jtf.getText();

int s=value.indexOf(temp,start);

if(value.indexOf(temp,start)!=-1){

jta.setSelectionStart(s);

jta.setSelectionEnd(s+temp.length());

jta.setSelectedTextColor(Color.GREEN);

start=s+1;

jta.replaceSelection(jt.getText());

}else {

JOptionPane.showMessageDialog(jf, "查找完毕!", "提示", 0, ic);

jf.dispose();

}

}else if("全部替换".equals(comm)){

String temp=jta.getText();

temp=temp.replaceAll(jtf.getText(), jt.getText());

jta.setText(temp);

}

}

public String read(){

String temp="";

try {

FileInputStream fis = new FileInputStream(f.getAbsolutePath());

byte[] b=new byte[1024];

while(true){

int num=fis.read(b);

if(num==-1)break;

temp=temp+new String(b,0,num);

}

fis.close();

} catch (Exception e1) {

e1.printStackTrace();

}

return temp;

}

public void write(){

try {

FileOutputStream fos=new FileOutputStream(f);

fos.write(jta.getText().getBytes());

fos.close();

} catch (Exception e) {

e.printStackTrace();

}

}

public void newNew(){

frame.dispose();

new MyNotepad();

flag=true;

}

public MyNotepad(){

JMenuBar jmb=new JMenuBar();

String[] menuLab={"文件","编辑","帮助"};

String[][] menuItemLab={{"新建","打开","保存","另存","退出"},

{"撤销","剪切","复制","粘贴","删除","全选","查找","替换"},

{"版本"}};

for(int i=0;imenuLab.length;i++){

JMenu menu=new JMenu(menuLab[i]);

jmb.add(menu);

for(int j=0;jmenuItemLab[i].length;j++){

JMenuItem jmi=new JMenuItem(menuItemLab[i][j]);

menu.add(jmi);

jmi.addActionListener(this);

}

}

frame.setJMenuBar(jmb);

jta.setLineWrap(true);//自动换行

JScrollPane jsp=new JScrollPane(jta);//滚动窗口面板

frame.add(jsp);

jb.addActionListener(this);

jbt.addActionListener(this);

jba.addActionListener(this);

frame.setLocation(200,50);

frame.setSize(620,660);

frame.setVisible(true);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

new MyNotepad();

}

}


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