求助:按钮响应指定文本文件

Question

  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.

Answer 1

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
    
}

Answer 2

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();
}}