jtabbedpaneusedemo.java

JAVA编程思想源代码 值得一下 很难找的

package chapter11;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextField;

public class JTabbedPaneUseDemo extends JApplet {
	public void init() {
		JTabbedPane jtp = new JTabbedPane();
		jtp.addTab("Cities", new CitiesPanel());
		jtp.addTab("Colors", new ColorsPanel());
		jtp.addTab("Age", new AgePanel());
		getContentPane().add(jtp);
	}
}

class CitiesPanel extends JPanel {

	JButton b1, b2, b3, b4;

	public CitiesPanel() {

		b1 = new JButton("Bei jing");
		add(b1);
		b2 = new JButton("Tai yuan");
		add(b2);
		b3 = new JButton("Fu zhou");
		add(b3);
		b4 = new JButton("shi jia zhuang");
		add(b4);
	}

}

class ColorsPanel extends JPanel {
	JTextField jtf;

	JCheckBox cb1, cb2, cb3;

	public ColorsPanel() {
		jtf = new JTextField("TextField");
		cb1 = new JCheckBox("Red");
		cb1.addItemListener(new Listener());
		add(cb1);
		cb2 = new JCheckBox("Green");
		cb2.addItemListener(new Listener());
		add(cb2);
		cb3 = new JCheckBox("Blue");
		cb3.addItemListener(new Listener());
		add(cb3);
		add(jtf);
	}

	class Listener implements ItemListener {
		public void itemStateChanged(ItemEvent e) {
			JCheckBox b = (JCheckBox) e.getItem();
			String s = b.getText();
			if (s == "Red") {
				jtf.setBackground(Color.RED);
			} else if (s == "Green") {
				jtf.setBackground(Color.GREEN);
			} else if (s == "Blue") {
				jtf.setBackground(Color.BLUE);
			}

		}

	}
}

class AgePanel extends JPanel {

	public AgePanel() {

		JComboBox jcb = new JComboBox();
		jcb.addItem("20");
		jcb.addItem("30");
		jcb.addItem("40");
		add(jcb);
	}
}