jcomboboxdemo.java

精通JBuilder2006 源代码 精通JBuilder2006 源代码

package chapter6.component;

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

public class JComboBoxDemo extends JFrame {
    public JComboBoxDemo() {
        Container contentPane = this.getContentPane();
        //利用String数组建立JComboBox
        JPanel jPanel1 = new JPanel(new GridLayout(1, 2));
        String[] fruit = {"苹果", "香蕉", "桔子", "梨", "芒果"};
        JComboBox jComboBox1 = new JComboBox(fruit);
        jComboBox1.addItem("其他");
        jComboBox1.setBorder(BorderFactory.createTitledBorder("您最喜欢的水果："));
        jPanel1.add(jComboBox1);
        //利用ComboModel建立JComboBox
        ComboBoxModel myModel = new MyModel();
        JComboBox jComboBox2 = new JComboBox(myModel);
        jComboBox2.setBorder(BorderFactory.createTitledBorder("您最喜欢的水果："));
        jPanel1.add(jComboBox2);
        contentPane.add(jPanel1);
        this.setTitle("JComboBoxDemo");
        this.setSize(350, 90);
        this.setLocation(400, 400);
        this.setVisible(true);
    }

    class MyModel extends DefaultComboBoxModel {
        String[] fruit = {"苹果", "香蕉", "桔子", "梨", "芒果"};
        MyModel() {
            for (int i = 0; i < fruit.length; i++) {
                this.addElement(fruit[i]);
            }
        }
    }

    public static void main(String[] args) {
        JComboBoxDemo test = new JComboBoxDemo();
    }
}