哪位高手帮忙改一下这个JAVA程序,现在在eclipse运行不成功,谢谢！

来源：百度知道 编辑：UC知道 时间：2024/06/19 09:52:03
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Dimension;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.Rectangle;
import javax.swing.JTextArea;
class Num extends JFrame implements ActionListener {

private JFrame jFrame = null;
private JPanel jContentPane = null;
private JLabel jLabel = null;
private JTextField jTextField = null;
private JButton jButton = null;
private JTextArea jTextArea = null;
private JFrame getJFrame() {
if (jFrame == null) {
jFrame = new JFrame();
jFrame.setSize(new Dimension(450, 210));
jFrame.setTitle("提取数字");
jFrame.setContentPane(getJContentPane());
}
return jFrame;
}
private JPanel getJC

一下代码是我在你写的代码基础上修改的：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Dimension;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.Rectangle;
import javax.swing.JTextArea;
class Num extends JFrame implements ActionListener {

private JFrame jFrame = null; //删掉
private JPanel jContentPane = null;
private JLabel jLabel = null;
private JTextField jTextField = null;
private JButton jButton = null;
private JTextArea jTextArea = null;
private JFrame getJFrame() { //修改成： public Num(){
if (jFrame == null) { //删掉
jFrame = new JFrame(); //删掉
jFrame.setSize(new Dimension(450, 210)); //修改成： this.setSize(new Dimension(450, 210));
jFrame.setTitle("提取数字"); //修改成： this.