[JAVA100例]018、使用HTML语言
时间:2011-01-09
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/**
* <p>Title: 在swing中使用html语言</p>
* <p>Description: 这里演示使用html语言在swing面板上构造显示信息</p>
* <p>Copyright: Copyright (c) 2003</p>
* <p>Filename: HtmlDemo.java</p>
* @version 1.0
*/
public class HtmlDemo extends JPanel
implements ActionListener {
JLabel theLabel;
JTextArea htmlTextArea;
/**
*<br>方法说明：构造器，描述窗体中的成员
*<br>输入参数：
*<br>返回类型：
*/
public HtmlDemo() {
setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));
String initialText = "<html>\n" +
"颜色和字体测试:\n" +
"<ul>\n" +
"<li><font color=red>red</font>\n" +
"<li><font color=blue>blue</font>\n" +
"<li><font color=green>green</font>\n" +
"<li><font size=-2>small</font>\n" +
"<li><font size=+2>large</font>\n" +
"<li><i>italic</i>\n" +
"<li><b>bold</b>\n" +
"</ul>\n";
//定义一个文本框
htmlTextArea = new JTextArea(10, 20);
htmlTextArea.setText(initialText);
JScrollPane scrollPane = new JScrollPane(htmlTextArea);
//定义按钮
JButton changeTheLabel = new JButton("改变显示");
changeTheLabel.setMnemonic(KeyEvent.VK_C);
changeTheLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
changeTheLabel.addActionListener(this);
//定义标签
theLabel = new JLabel(initialText) {
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
public Dimension getMinimumSize() {
return new Dimension(200, 200);
}
public Dimension getMaximumSize() {
return new Dimension(200, 200);
}
};
//设置标签的对齐方式
theLabel.setVerticalAlignment(SwingConstants.CENTER);
theLabel.setHorizontalAlignment(SwingConstants.CENTER);
//构造一个带边框的左边的编辑面板
JPanel leftPanel = new JPanel();
leftPanel.setLayout(new BoxLayout(leftPanel, BoxLayout.PAGE_AXIS));
leftPanel.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createTitledBorder(
"编辑HTML，点击按钮显示结果。"),
BorderFactory.createEmptyBorder(10,10,10,10)));
leftPanel.add(scrollPane);
leftPanel.add(Box.createRigidArea(new Dimension(0,10)));
leftPanel.add(changeTheLabel);
//构造一个带边框的右边显示的面板
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