畫圓壹般通過繼承JPanel 或者JFrame ,通過調用panel或者frame中的Graphics實例完成畫圖。
java繪圖的基本原理:畫壹個圓
import javax.swing.*;
import java.awt.*;
public class DrawCicle extends JFrame{MyPanel mp=null;public static void main(String[] args) {DrawCicle dc=new DrawCicle();}
public DrawCicle(){mp =new MyPanel();this.add(mp);this.setSize(300, 250);
this.setLocation(600, 300);this.setDefaultCloseOperation(this.EXIT_ON_CLOSE)this.setVisible(true);}}