Java捕获选项事件ItemEvent

[java]
package com.han;

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Vector;

import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JFrame;

/**
* 捕获选项事件ItemEvent
* @author HAN
*
*/
public class ItemEvent_1 extends JFrame {

    /**
     *
     */
    private static final long serialVersionUID = -9005090453541883935L;

    public ItemEvent_1() {
        // TODO Auto-generated constructor stub
        Container container = getContentPane();
        container.setLayout(new FlowLayout());
        Vector<String> vector = new Vector<String>();
        for (int i = 1; i<6; i++)
            vector.add("选项" + i);
        DefaultComboBoxModel<String> defaultComboBoxModel =
                new DefaultComboBoxModel<String>(vector);
        JComboBox<String> comboBox = new JComboBox<String>(defaultComboBoxModel);
        container.add(comboBox);
        comboBox.addItemListener(new ItemListener() {

            @Override
            public void itemStateChanged(ItemEvent e) {
                // TODO Auto-generated method stub
                String item = e.getItem().toString();
                int stateChange = e.getStateChange();
                if (stateChange == ItemEvent.SELECTED) {
                    System.out.println("此次事件由选中“" + item + "”触发！");
                }else if (stateChange == ItemEvent.DESELECTED) {
                    System.out.println("此次事件由取消选中“" + item + "”触发！");
                }else {
                    System.out.println("此次事件由其它原因触发！");
                }
            }

        });
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ItemEvent_1 frame = new ItemEvent_1();
        frame.setTitle("选项事件示例");
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.setBounds(0, 0, 300, 100);
    }

}

package com.han;

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Vector;

import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JFrame;

/**
* 捕获选项事件ItemEvent
* @author HAN
*
*/
public class ItemEvent_1 extends JFrame {

/**
*
*/
private static final long serialVersionUID = -9005090453541883935L;

public ItemEvent_1() {
  // TODO Auto-generated constructor stub
  Container container = getContentPane();
  container.setLayout(new FlowLayout());
  Vector<String> vector = new Vector<String>();
  for (int i = 1; i<6; i++)
   vector.add("选项" + i);
  DefaultComboBoxModel<String> defaultComboBoxModel =
    new DefaultComboBoxModel<String>(vector);
  JComboBox<String> comboBox = new JComboBox<String>(defaultComboBoxModel);
  container.add(comboBox);
  comboBox.addItemListener(new ItemListener() {

   @Override    www.zzzyk.com
   public void itemStateChanged(ItemEvent e) {
    // TODO Auto-generated method stub
    String item = e.getItem().toString();
    int stateChange = e.getStateChange();
    if (stateChange == ItemEvent.SELECTED) {
     System.out.println("此次事件由选中“" + item + "”触发！");
    }else if (stateChange == ItemEvent.DESELECTED) {
     System.out.println("此次事件由取消选中“" + item + "”触发！");
    }else {
     System.out.println("此次事件由其它原因触发！");
    }
   }

  });
}

/**
* @param args
*/
public static void main(String[] args) {
  // TODO Auto-generated method stub
  ItemEvent_1 frame = new ItemEvent_1();
  frame.setTitle("选项事件示例");
  frame.setVisible(true);
  frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
  frame.setBounds(0, 0, 300, 100);
}

}

作者：Gaowen_HAN

补充：软件开发 , Java ,