java中的比较大小的代码

package aaa;

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

/**
 * <p>Title: 条件语句</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2006</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class aaaFrame1 extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();
  JTextField jTextField1 = new JTextField();

  //Construct the frame
  public aaaFrame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    double d1=36.2;
    double d2=58.4;
    if(d2>=d1)
      jTextField1.setText(d2+">="+d1);

        else
          jTextField1.setText(d1+">="+d2);
    contentPane = (JPanel) this.getContentPane();

    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame Title");
    contentPane.add(jTextField1, BorderLayout.NORTH);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
}