求编写一个超级简单的Java的程序源代码

import java.awt.*;

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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相关问题，求助源代码

第一种

package com.at.java;

class PIThread extends Thread{

public void run(){

double num=1,PI=0;int i=0;

while(num0.001) {

num=(double)4/(2*i+++1);

if(i%2==0)PI-=num;

else PI+=num;

System.out.println("派的数值为"+PI);

if(num=0.001)System.out.println("××××××××××派的数值计算已经结束××××××××××");

}

}

}

class EThread extends Thread{

public void run(){

double num=1,E=0;int i=1;

while(1/num0.00000001) {

num=num*i++;

E+=1/num;

System.out.println("自然对数E的数值为"+E);

if(1/num=0.00000001)System.out.println("××××××××××自然对数的数值计算已经结束××××××××××");

}

}

}

public class JustTest {

public static void main(String args[]) {

PIThread p=new PIThread();

EThread e=new EThread();

p.start();

e.start();

int sum=0;

for(int i=1;i1001;i++)

{

sum+=i;

System.out.println(sum);

}

System.out.println("×××××××××××××自动求和1到1000已经结束××××××××××××××××");

}

}

第二种

package com.at.java;

class PIThread implements Runnable{

public void run(){

double num=1,PI=0;int i=0;

while(num0.001) {

num=(double)4/(2*i+++1);

if(i%2==0)PI-=num;

else PI+=num;

System.out.println("派的数值为"+PI);

if(num=0.001)System.out.println("××××××××××派的数值计算已经结束××××××××××");

}

}

}

class EThread implements Runnable{

public void run(){

double num=1,E=0;int i=1;

while(1/num0.00000001) {

num=num*i++;

E+=1/num;

System.out.println("自然对数E的数值为"+E);

if(1/num=0.00000001)System.out.println("××××××××××自然对数的数值计算已经结束××××××××××");

}

}

}

public class JustTest {

public static void main(String args[]) {

PIThread p=new PIThread();

EThread e=new EThread();

Thread t1=new Thread(p);

Thread t2=new Thread(e);

t1.start();

t2.start();

int sum=0;

for(int i=1;i1001;i++)

{

sum+=i;

System.out.println(sum);

}

System.out.println("×××××××××××××自动求和1到1000已经结束××××××××××××××××");

}

}

都已经验证过，正常运行

java：哪里能看到JDK的源代码？

你安装JDK的目录下，有个src.zip文件，这个就是JDK源代码的java文件。

你可以解压来查看，但，最好是关联到IDE如 eclipse 中（不需解压），然后 CTRL + 点击就可以查看到源代码了。

如下图：

求一个JAVA的压缩程序源代码。

package com.io2.homework;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.zip.ZipEntry;

import java.util.zip.ZipOutputStream;

/*压缩文件夹*/

public class MyMultipleFileZip

{

private String currentZipFilePath = "F:/MyZip.zip";

private String sourceFilePath;

private ZipOutputStream zos;

private FileInputStream fis;

public MyMultipleFileZip(String sourceFilePath)

{

try

{

this.sourceFilePath = sourceFilePath;

zos = new ZipOutputStream(new FileOutputStream(currentZipFilePath));

//设定文件压缩级别

zos.setLevel(9);

} catch (FileNotFoundException e)

{

e.printStackTrace();

}

}

// 在当前条目中写入具体内容

public void writeToEntryZip(String filePath)

{

try

{

fis = new FileInputStream(filePath);

} catch (FileNotFoundException e1)

{

e1.printStackTrace();

}

byte[] buff = new byte[1024];

int len = 0;

try

{

while ((len = fis.read(buff)) != -1)

{

zos.write(buff, 0, len);

}

} catch (IOException e)

{

e.printStackTrace();

}finally

{

if (fis != null)

try

{

fis.close();

} catch (IOException e)

{

e.printStackTrace();

}

}

}

// 添加文件条目

public void addFileEntryZip(String fileName)

{

try

{

zos.putNextEntry(new ZipEntry(fileName));

} catch (IOException e)

{

e.printStackTrace();

}

}

public void addDirectoryEntryZip(String directoryName)

{

try

{

zos.putNextEntry(new ZipEntry(directoryName + "/"));

} catch (IOException e)

{

e.printStackTrace();

}

}

// 遍历文件夹

public void listMyDirectory(String filePath)

{

File f = new File(filePath);

File[] files = f.listFiles();

if(files!=null)

{

for (File currentFile : files)

{

// 设置条目名称(此步骤非常关键)

String entryName= currentFile.getAbsolutePath().split(":")[1].substring(1);

// 获取文件物理路径

String absolutePath = currentFile.getAbsolutePath();

if (currentFile.isDirectory())

{

addDirectoryEntryZip(entryName);

//进行递归调用

listMyDirectory(absolutePath);

}

else

{

addFileEntryZip(entryName);

writeToEntryZip(absolutePath);

}

}

}

}

// 主要流程

public void mainWorkFlow()

{

listMyDirectory(this.sourceFilePath);

if(zos!=null)

try

{

zos.close();

} catch (IOException e)

{

e.printStackTrace();

}

}

public static void main(String[] args)

{

new MyMultipleFileZip("F:/fountainDirectory").mainWorkFlow();

}

}

标题名称：顺丰优选java源代码,顺丰科技java
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