test1.java

一个Java小程序源代码（反转字符串）适合初学者使用

//BorderLayoutTest.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;

public class test1
{  
public static void main(String[] args)
{  
    cloneFrame frame = new cloneFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.show();
}
}

class cloneFrame extends JFrame
{
public cloneFrame()
{
    setTitle("机试程序");
    setSize(600, 400);
  
    JPanel buttonPanel = new JPanel();
    buttonPanel.setBackground(new Color(56,43,85));
          Button1 = new JButton("点击复制反转字符串");
     Button1.addActionListener(new turnListener());
     buttonPanel.add(Button1);

    JPanel textPanel = new JPanel();
      textPanel.setBackground(new Color(100,100,100));

  
     field1 = new JTextField("姓名：老孙；学号：2004132028", 20);
     field2 = new JTextField("反转", 20);
     field2.setEditable(false);
     textPanel.add(field1);
     textPanel.add(field2);
   
     JPanel tuPanel = new JPanel();
     JLabel label = new JLabel(new ImageIcon("006.gif"));
     tuPanel.add(label);
     tuPanel.setBackground(new Color(100,100,100));
  
    Container contentPane = getContentPane();
    contentPane.add(buttonPanel, BorderLayout.SOUTH);
    contentPane.add(textPanel, BorderLayout.NORTH);
    contentPane.add(tuPanel, BorderLayout.CENTER);
    contentPane.setBackground(new Color(100,100,100));
}


private class turnListener
    implements ActionListener
{
    public void actionPerformed(ActionEvent event)
    {
     String gets = field1.getText();
   
      int i = gets.length();
          StringBuffer buffer = new StringBuffer(i);
          for(int j=i-1;j>=0;j--)
          {
              buffer.append(gets.charAt(j));
          }
        
          String gets2 = buffer.toString();
          field2.setText(gets2);
   
  
    }
}

      private JButton Button1;
private JTextField field1;
private JTextField field2;
}