求助:按钮响应指定文本文件 请问: 如何用swing实现以下功能:单击按钮,打开一个指定文本文件. 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 请大家帮帮忙吧.以下是我在NetBeans 中设计的GUI的源代码,想实现上面这个功能,求助./* * FirstGUI.java * * Created on 2008年2月15日, 下午2:22 */package myFirstGUI;import javax.swing.*;/** * * @author Administrator */public class FirstGUI extends javax.swing.JFrame { /** Creates new form FirstGUI */ public FirstGUI() { initComponents(); } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { jTextField1 = new javax.swing.JTextField(); jTextField2 = new javax.swing.JTextField(); jButton1 = new javax.swing.JButton(); jButton2 = new javax.swing.JButton(); jButton3 = new javax.swing.JButton(); jButton4 = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jTextField1.setFont(new java.awt.Font("宋体", 0, 24)); jTextField1.setText(" 点滴日语智能记忆"); jTextField2.setFont(new java.awt.Font("宋体", 0, 18)); jTextField2.setText(" 请选择词库:"); jButton1.setText("中日交流标准日本语初级上册"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); jButton2.setText("中日交流标准日本语初级下册"); jButton3.setText("中日交流标准日本语中级上册"); jButton4.setText("中日交流标准日本语中级下册"); org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(163, 163, 163) .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 224, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE) .addContainerGap(125, Short.MAX_VALUE)) .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup() .add(46, 46, 46) .add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 132, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE) .add(66, 66, 66) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(jButton1) .add(jButton4) .add(jButton3) .add(jButton2)) .add(79, 79, 79)) ); layout.setVerticalGroup( layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .addContainerGap() .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 51, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE) .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 46, Short.MAX_VALUE) .add(jButton1) .add(18, 18, 18) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(jButton2) .add(18, 18, 18) .add(jButton3) .add(18, 18, 18) .add(jButton4)) .add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 44, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)) .add(88, 88, 88)) ); pack(); }// </editor-fold> private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: } /** * @param args the command line arguments */ public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new FirstGUI().setVisible(true); } }); } // Variables declaration - do not modify private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JButton jButton3; private javax.swing.JButton jButton4; private javax.swing.JTextField jTextField1; private javax.swing.JTextField jTextField2; // End of variables declaration } 在按钮事件中读取文本,给你个文本文件读写的小例子:import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileReader;import java.io.FileWriter;public class TestMain { /** * 构造方法 */ public TestMain() { try { File file = new File("C:\\test.txt"); BufferedWriter write = new BufferedWriter(new FileWriter(file, true)); for(int i = 0; i < 10; i++){ write.write("写入行数:" + i + "\n"); write.flush(); } write.close(); BufferedReader read = new BufferedReader(new FileReader(file)); String temp = ""; while((temp = read.readLine()) != null){ System.out.println(temp); } read.close(); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { new TestMain(); }} 小程序:加法计算器 Runtime.getRuntime().exec的输出问题?? 输入用户名后回车,为什么无法把焦点传给密码框,几句小代码,谢谢了。 Java对象引用问题? 请问楼主结贴了意味着什么?得到分或给人家分又意味着什么? JBuild2005中如何配置TOMCAT 问:一个方法给定两个日期,怎么求出相距天数啊 小弟相求,麻烦大哥帮我看一下Collections.sort()排序,为什么有错呢? 求代码!!! 急救:关于BLOB数据类型---在线等待,高分相送! 某大型公司JAVA面试问题?有关super()问题无分!想换工作的朋友感兴趣看下? 新手遇到的试题
* FirstGUI.java
*
* Created on 2008年2月15日, 下午2:22
*/package myFirstGUI;
import javax.swing.*;
/**
*
* @author Administrator
*/
public class FirstGUI extends javax.swing.JFrame {
/** Creates new form FirstGUI */
public FirstGUI() {
initComponents();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() { jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jTextField1.setFont(new java.awt.Font("宋体", 0, 24));
jTextField1.setText(" 点滴日语智能记忆"); jTextField2.setFont(new java.awt.Font("宋体", 0, 18));
jTextField2.setText(" 请选择词库:"); jButton1.setText("中日交流标准日本语初级上册");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
}); jButton2.setText("中日交流标准日本语初级下册"); jButton3.setText("中日交流标准日本语中级上册"); jButton4.setText("中日交流标准日本语中级下册"); org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(163, 163, 163)
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 224, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(125, Short.MAX_VALUE))
.add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
.add(46, 46, 46)
.add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 132, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(66, 66, 66)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jButton1)
.add(jButton4)
.add(jButton3)
.add(jButton2))
.add(79, 79, 79))
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 51, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 46, Short.MAX_VALUE)
.add(jButton1)
.add(18, 18, 18)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(jButton2)
.add(18, 18, 18)
.add(jButton3)
.add(18, 18, 18)
.add(jButton4))
.add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 44, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.add(88, 88, 88))
); pack();
}// </editor-fold> private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new FirstGUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
// End of variables declaration
}
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;public class TestMain { /**
* 构造方法
*/
public TestMain() {
try {
File file = new File("C:\\test.txt");
BufferedWriter write = new BufferedWriter(new FileWriter(file, true));
for(int i = 0; i < 10; i++){
write.write("写入行数:" + i + "\n");
write.flush();
}
write.close();
BufferedReader read = new BufferedReader(new FileReader(file));
String temp = "";
while((temp = read.readLine()) != null){
System.out.println(temp);
}
read.close();
} catch (Exception e) {
e.printStackTrace();
}
} public static void main(String[] args) {
new TestMain();
}}