JDK Frame内容区绘制边框

 这是为了检查，自己的绘制，有没有越界。

• 效果

• 代码

package taishan;

import java.awt.Color;
import java.awt.Graphics;

@SuppressWarnings("serial")
public abstract class RotateFontFrameAbstract extends TFrame
{
    private   final static int    FRAME_WIDTH  = 540;
    private   final static int    FRAME_HEIGHT = 480;

	private void drawFrameBorder(Graphics g)
	{
		int startX = 8;
		int startY = 31;
		
		int endX   = FRAME_WIDTH  - 9;
		int endY   = FRAME_HEIGHT - 9;
		
		g.setColor(COLOR_BORDER);
		g.drawLine(startX, startY, FRAME_WIDTH, startY);
		g.drawLine(startX, startY, startX,      FRAME_HEIGHT);
		
		g.drawLine(startX, endY,   endX,        endY);
		g.drawLine(endX,   startY, endX,        endY);
	}

	@Override
    public final void paint(Graphics g)
    {
		super.paint(g);
		
        drawFrameBorder();
    }
	
	protected final static void display(TFrame frame)
	{
        frame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
        frame.setVisible(true);
	}
}