showfonts.java

java的DRAW类演示

import java.awt.*;
import java.awt.event.*;

public class ShowFonts implements ItemListener
{
	Frame f;
	MyCanvas mc;
	Choice ch;
	String fontName[];
	
	public static void main(String argv[])
	{
		new ShowFonts();
	}
	
	public ShowFonts()
	{
		f = new Frame("ShowFonts");
		
		fontName = GraphicsEnvironment.getLocalGraphicsEnvironment().
					getAvailableFontFamilyNames();
		
		ch = new Choice();
		ch.addItemListener(this);
		for (int i=0; i<fontName.length; i++)
			ch.addItem(fontName[i]);
		
		mc = new MyCanvas(fontName[0]);
		
		f.add(ch, BorderLayout.NORTH);
		f.add(mc, BorderLayout.CENTER);
		f.pack();
		f.setVisible(true);
	}
	
	public void itemStateChanged(ItemEvent e)
	{
		mc.setFontName(ch.getSelectedItem());
		mc.repaint();
	}
	
	class MyCanvas extends Canvas
	{
		String fontName;
		
		public MyCanvas(String name)
		{
			fontName = name;
			setSize(200,50);
		}
		
		public void setFontName(String name)
		{
			fontName = name;
		}
		
		public void paint(Graphics g)
		{
			g.setFont(new Font(fontName, Font.PLAIN, 36));
			g.setColor(Color.blue);
			g.drawString("中文ABC", 60, 35);
			g.clearRect(10,10,50,50);
		}
	}
}