components4.java

Swing入门必看 Swing Demo

/*
 * @(#)Components4.java 2007-4-27
 * Copyright 2007 AIC. All rights reserved. 
 */
package components;

import java.awt.Color;

import javax.swing.*;


/**
 * Demonstrating JPanel, JScrollPane, JTabbedPane
 * 
 * Note: 
 * 		Their construtors and methods, listeners.
 * 
 * @author Henry Zhu
 */
public class Components4 extends AbstractComponents {

	private static final long serialVersionUID = 1L;

	private JPanel panel1, panel2;
	
	private JScrollPane scrollPane1, scrollPane2;
	
	private JTabbedPane tabbedPane;
	
	protected void initComponents(Box box) {
		String[] items = { "one", "two", "three", "four", "five", "six" };

		/* ===================JPanel=================== */
		  
		JLabel label = new JLabel("User Name:");
		JTextField textField = new JTextField(10);
		
		// # JPanel constructors
		panel1 = new JPanel();
//		panel1 = new JPanel(new FlowLayout());

		// # JPanel methods
		panel1.setBackground(Color.GRAY);
		panel1.add(label);
		panel1.add(textField);
		
		box.add(panel1);
		box.add(Box.createVerticalStrut(20));
		
		/* =================JScrollPane================= */	
		
		JTextArea textArea = new JTextArea(5, 10);
		textArea.setLineWrap(true);
		textArea.setWrapStyleWord(true);
		
		// # JScrollPane constructors
		scrollPane1 = new JScrollPane(textArea);

		// # JScrollPane methods
		scrollPane1.setVerticalScrollBarPolicy(
				JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
		scrollPane1.setWheelScrollingEnabled(true);
		
		box.add(scrollPane1);
		box.add(Box.createVerticalStrut(20));
		
		/* ============================================ */	

		ButtonGroup group = new ButtonGroup();
		JRadioButton red = new JRadioButton("Red");
		JRadioButton green = new JRadioButton("Green");
		JRadioButton blue = new JRadioButton("Blue", true);
		
		group.add(red);
		group.add(green);
		group.add(blue);
		
		panel2 = new JPanel();
		panel2.add(red);
		panel2.add(green);
		panel2.add(blue);

		JList list = new JList(items);
		list.setVisibleRowCount(5);
		list.setFixedCellWidth(200);
		list.setFixedCellHeight(20);
		scrollPane2 = new JScrollPane(list);
		
		/* =================JTabbedPane================= */
		
		// # JTabbedPane constructors			
//		tabbedPane = new JTabbedPane();
		tabbedPane = new JTabbedPane(JTabbedPane.TOP);
//		tabbedPane = new JTabbedPane(JTabbedPane.TOP, 
//				JTabbedPane.SCROLL_TAB_LAYOUT);
		
		// # JTabbedPane methods
		tabbedPane.addTab( "Tab One", null, panel2, "First Panel" );
		tabbedPane.addTab( "Tab Two", null, scrollPane2, "First Panel" );
		
		box.add(tabbedPane);
		box.add(Box.createVerticalStrut(20));
	}

	/**
	 * 
	 * @param title
	 */
	public Components4(String title) {
		super(title);
	}

	public static void main(String args[]) {
		// create Components3 object
		String title = "Components: JPanel, JScrollPane, JTabbedPane";
		new Components4(title);
	}
}