用的是jdk1.7,我是java新手,
panel=new Panel();
Canvas canvas=new Canvas();
canvas.setSize(500, 500);
canvas.setBackground(Color.black);
canvas.setVisible(true);
canvas.setEnabled(true);
panel.add(canvas);
panel.setLayout(null);
Graphics gp = canvas.getGraphics();
gp.drawArc(30, 30, 30, 30, 30, 30);
panel=new Panel();
Canvas canvas=new Canvas();
canvas.setSize(500, 500);
canvas.setBackground(Color.black);
canvas.setVisible(true);
canvas.setEnabled(true);
panel.add(canvas);
panel.setLayout(null);
Graphics gp = canvas.getGraphics();
gp.drawArc(30, 30, 30, 30, 30, 30);
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货