Java绘制基本图形

本文主要是介绍Java绘制基本图形，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;public class DrawTest {
public static void main (String [] args){JFrame window = new DrawFrame();window.setTitle("绘制图形");window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);window.setBounds(100,100,600,400);window.setVisible(true);
}
}//窗口类
class DrawFrame extends JFrame{public DrawFrame(){add(new DrawComponent());pack();}
}//图形类
class DrawComponent extends JComponent{private static final int DEAFULT_WIDTH = 400;private static final int DEFAULT_HEIGHT = 400;public void paintComponent(Graphics g){Graphics2D g2 = (Graphics2D)g;//绘制矩形double leftx = 100;double topy = 100;double width = 200;double height = 150;Rectangle2D rect = new Rectangle2D.Double(leftx,topy ,width,height);g2.draw(rect);//绘制椭圆Ellipse2D ellipse = new Ellipse2D.Double();ellipse.setFrame(rect);g2.draw(ellipse);//绘制直线g2.draw(new Line2D.Double(leftx,topy,leftx + width ,topy + height));//画正圆double centerx = rect.getCenterX();double centery = rect.getCenterY();double radius = 150;Ellipse2D circle = new Ellipse2D.Double();circle.setFrameFromCenter(centerx, centery,centerx+radius,centery+radius);g2.draw(circle);}
}

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