drawtest.java

介绍有关java的资料 课件 相当一本书籍 里面都是很基础的知识

import java.awt.*;

public class DrawTest extends Frame {
    public DrawTest() {
	setLayout(new BorderLayout());
	DrawPanel display = new DrawPanel();
	add("Center", display);
    }

    public boolean handleEvent(Event e) {
	switch (e.id) {
	  case Event.WINDOW_DESTROY:
	    System.exit(0);
	    return true;
	  default:
	    return false;
	}
    }

    public static void main(String args[]) {
	DrawTest drawTest = new DrawTest();
        drawTest.setTitle("画图程序");
        drawTest.setSize(500,300);
        drawTest.show();
    }
}

class DrawPanel extends Panel {
    public void paint(Graphics g) {
      g.drawLine(10,10,30,30);    // 画线
      g.drawLine(15,20,15,20);    // 画点
      g.drawRect(40,10,60,30);    // 画矩形
      g.fillRect(120,10,60,30);
      g.drawRoundRect(200,10,50,30,20,20);   // 画圆角矩形
      g.fillRoundRect(280,10,50,30,40,30);
      g.drawRoundRect(360,10,50,30,50,30);
      g.draw3DRect(20,60,80,60,true);       // 画立体矩形
      g.fill3DRect(120,60,80,60,false);
      int Poly1_x[]={230,263,315,272,267};
      int Poly1_y[]={60,40,115,94,126};
      int Poly1_pts=Poly1_x.length;
      int Poly2_x[]={380,413,465,422,417};
      int Poly2_y[]={60,40,115,94,126};
      int Poly2_pts=Poly2_x.length;
      g.drawPolygon(Poly1_x,Poly1_y, Poly1_pts);
      g.fillPolygon(Poly2_x,Poly2_y, Poly2_pts);
      g.drawOval(30,150,60,60);            // 画椭圆
      g.fillOval(130,150,80,60);
      g.drawArc(210,150,100,60,35,-140);     // 画弧
      g.fillArc(310,150,100,60,35,65);
    }
}