stringhandleframe.java

Java灵感编程1-101之21-40

package stringhandle;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;

/**
 * <p>Title:  string Handle Demo</p>
 * <p>Description: This is a string Handle Demo</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: D6-125</p>
 * @author liujun
 * @version 1.0
 */

public class stringHandleFrame extends JFrame {
  JPanel contentPane;
  JTextField jTextField1 = new JTextField();
  XYLayout xYLayout1 = new XYLayout();
  JButton jButton1 = new JButton();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  boolean changebutton=true;

  //Construct the frame
  public stringHandleFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(stringHandleFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(xYLayout1);
    this.setResizable(false);
    this.setSize(new Dimension(394, 245));
    this.setTitle("string Handle Frame Demo");
    jButton1.setText("添加字符串");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.add(jTextField1,     new XYConstraints(22, 10, 245, 30));
    contentPane.add(jButton1,    new XYConstraints(279, 10, 108, 31));
    contentPane.add(jLabel1,   new XYConstraints(16, 65, 361, 43));
    contentPane.add(jLabel2,  new XYConstraints(16, 128, 361, 43));
    contentPane.add(jLabel3, new XYConstraints(16, 187, 361, 43));
  }
  //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);
    }
  }

  void jButton1_actionPerformed(ActionEvent e) {
    String name;  //用于按钮的名字比较
    int a; //用于判断两个字符串的比较结果
    name=jButton1.getText();    //得到按钮的文本标签
    if(name.equals("比较")){    //若是“比较”，则执行字符串比较功能
          a=jLabel1.getText().compareTo(jLabel2.getText());//得到比较结果
            if(a<0){  //字符串1小于字符串2，设置标签三
               jLabel3.setText("字符串1小于字符串2");
               }else if(a>0){  //字符串1大于字符串2，设置标签三
               jLabel3.setText("字符串1大于字符串2");
                }else{  //字符串1和字符串2相等，设置标签三
               jLabel3.setText("字符串1和字符串2相等");
               }
         changebutton=true;
         jButton1.setText("添加字符串1");//比较完成，将按钮标签重置
        }else if(changebutton){//添加第一个字符串
          jLabel1.setText(jTextField1.getText()); //添加字串到标签1中
          changebutton=!changebutton; //更改changebutton变量值
          jTextField1.setText("");  //清空输入文本框
          jButton1.setText("添加字符串2");//更改按钮标签
          jLabel2.setText("");  //清空标签2
          jLabel3.setText("");  //清空标签3
          }else{  //添加第二个字符串
          jLabel2.setText(jTextField1.getText()); //添加字串到标签2中
          changebutton=!changebutton;//更改changebutton变量值
          jTextField1.setText(""); //清空输入文本框
          jButton1.setText("比较"); //更改按钮标签
          }
  }
}