JAVA 如何通过按钮打开另一个程序

package kuohao;

import java.awt.Button;

import java.awt.Color;

import java.awt.FileDialog;

import java.awt.Frame;

import java.awt.TextArea;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileReader;

import java.io.FileWriter;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class jtxtfm {

public static void main(String args[]) {

JFrame jf = new JFrame();

JPanel jp = new JPanel();

JButton jb = new JButton("打开对话框");

jf.add(jp);

jp.add(jb);

jf.setVisible(true);

jf.setSize(200,200);

jb.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

jtxtfrm fm = new jtxtfrm();

}

});

}

}

class jtxtfrm extends Frame implements ActionListener {

FileDialog op, sv;

Button btn1, btn2, btn3;

TextArea tarea;

jtxtfrm() {

super("读写文件");

setLayout(null);

setBackground(Color.cyan);

setSize(600, 300);

setVisible(true);

btn1 = new Button("打开");

btn2 = new Button("保存");

btn3 = new Button("关闭");

tarea = new TextArea("");

add(btn1);

add(btn2);

add(btn3);

add(tarea);

tarea.setBounds(30, 50, 460, 220);

btn1.setBounds(520, 60, 50, 30);

btn2.setBounds(520, 120, 50, 30);

btn3.setBounds(520, 180, 50, 30);

op = new FileDialog(this, "打开", FileDialog.LOAD);

sv = new FileDialog(this, "保存", FileDialog.SAVE);

btn1.addActionListener(this);

btn2.addActionListener(this);

btn3.addActionListener(this);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

setVisible(false);

System.exit(0);

}

});

}

public void actionPerformed(ActionEvent e) {

if (e.getSource() == btn1) {

String str;

op.setVisible(true);

try {

File f1 = new File(op.getDirectory(), op.getFile());

FileReader fr = new FileReader(f1);

BufferedReader br = new BufferedReader(fr);

tarea.setText("");

while ((str = br.readLine()) != null)

tarea.append(str + '\n');

fr.close();

} catch (Exception e1) {

}

}

if (e.getSource() == btn2) {

sv.setVisible(true);

try {

File f1 = new File(sv.getDirectory(), sv.getFile());

FileWriter fw = new FileWriter(f1);

BufferedWriter bw = new BufferedWriter(fw);

String gt = tarea.getText();

bw.write(gt, 0, gt.length());

bw.flush();

fw.close();

} catch (Exception e2) {

}

}

if (e.getSource() == btn3) {

System.exit(0);

}

}

}

只要将你的代码写在button下的监听里面就可以了，你看一下我的这个代码，只是做了个简单的改动，就实现了

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Sa extends JFrame{

JTextField t=new JTextField(5);

public Sa(){

super("客服端");

JButton a= new JButton("确定");

this.setLayout(new BorderLayout());

getContentPane().add(a,BorderLayout.SOUTH);

getContentPane().add(t,BorderLayout.CENTER);

a.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

t.setText(""+sum());

}

});

}

public static void main(String [] args){

Sa s=new Sa();

s.setSize(250,100);

s.setVisible(true);

}

public int sum(){

int a=2,b=4;

int sum=a+b;

return sum;

}

}

package socket.fox.msgdeal;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Toolkit;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

public class JProgressBar extends Frame implements Runnable {

int x, y; // 进度倏起始位置

int rectWidth, rectHeight, width, height, num; // 进度格倏宽,进度格高,进度倏宽,进度倏高,格子数量

int x0, d, n; // 进度,进度格之间的距离,进度n%

Image bufImg;

Graphics gBuf;

public JProgressBar() {

x = 40;

y = 50;

x0 = x;

rectWidth = 6; // 每个进度格的宽

rectHeight = 10;

d = rectWidth / 3;

num = 50; // 显示五十个进度格

width = (rectWidth + d) * num;

height = rectHeight + 4; // 进度格的高

init();

bufImg = this.createImage(getWidth(), getHeight());

gBuf = bufImg.getGraphics();

paintBack();

repaint();

}

public void init() {

this.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

this.setSize(this.x * 2 + width, this.y * 2 + height);

this.setVisible(true);

Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();

int w = getSize().width;

int h = getSize().height;

int x = (dim.width - w) / 2;

int y = (dim.height - h) / 2;

setLocation(x, y);

}

public static void main(String[] args) {

new Thread(new JProgressBar()).start();

}

public void paintBack() {

gBuf.drawRoundRect(x, y, width, height, 6, 6);

}

public void paintProgressRect() {

Color c = gBuf.getColor();

gBuf.setColor(new Color(46, 211, 49));

x0 = x;

for (int i = 0; i < n; i++) {

gBuf.fillRect(x0, y + 2, rectWidth, rectHeight);

x0 += rectWidth + d;

}

gBuf.setColor(c);我爱编程网

}

public void paint(Graphics g) {

g.drawImage(bufImg, 0, 0, this);

}

/**

* 设置进度倏进度

*

* @param n

* 进度百分比

*/

public void setPercent(int n) {

this.n = n;

}

public void run() {

boolean flag = true;

while (flag) {

try {

repaint();

Thread.sleep(500);

n++;

System.out.println(n);

if (n > num) {

n = num;

flag = false;

}

paintProgressRect();

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}