java画圆形的代码 java绘制圆形

JAVA画圆

import java.awt.Frame;

创新互联建站自2013年创立以来,是专业互联网技术服务公司,拥有项目成都网站设计、网站制作网站策划,项目实施与项目整合能力。我们以让每一个梦想脱颖而出为使命,1280元霍山做网站,已为上家服务,为霍山各地企业和个人服务,联系电话:18982081108

import java.awt.Graphics;

public class S extends Frame{

private int x;

private int y;

private boolean drawOval;//为true时绘制

//测试入口函数

public static void main(String []args)

{

new S().print();

}

//构造函数,初始化x、y坐标,设置drawOval变量为false,设置窗体大小

public S()

{

x = 200;

y = 200;

drawOval = false;

this.setSize(400,400);

this.setVisible(true);

}

public void print(){

//在调用S类实例的print方法时,画一个以属性X,Y为起点的宽高为10的圆.

drawOval = true; //设置drawOval变量为true

repaint(); //调用刷新画面方法

}

public void paint(Graphics g)

{

//为true时绘制

if(drawOval)g.fillOval(x,y,10,10);

}

}

求Java三角形圆形代码过程!急急急!!!

public class Test {

public static void main(String[] args) {

//三角形

Triangle t = new Triangle(3.0,4.0,5.0);

t.GetArea();

//圆形

Circle c = new Circle(5.0);

c.getArea();

}

}

class Triangle {

double x, y, z, p, s;

public Triangle(double x, double y, double z) {

this.x = x;

this.y = y;

this.z = z;

}

public void GetArea() {

if (x + y = z || x + z = y || y + z = x)

System.out.println("不能构成三角形");

else {

p = (x + y + z) / 2;

s = (double) Math.sqrt(p * (p - x) * (p - y) * (p - z));

System.out.println("三角形面积为:"+s);

}

}

}

class Circle {

double r ;

public Circle(double r){

this.r = r;

}

public void getArea() {

double S = Math.PI * r * r;

System.out.print("圆形面积为:" + S);

}

}

我建的是类部类,你移出去一样的。希望能帮到你!

用JAVA编写圆

代码如下:

import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JPanel; public class TestSw extends JFrame { public static void main(String[] args) { new TestSw(); } public TestSw(){ super("Test"); this.setSize(new Dimension(400,300)); this.setContentPane(new Mypane()); this.setVisible(true); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } class Mypane extends JPanel{ public void paint(Graphics g) { super.paint(g); g.setColor(Color.red); g.setXORMode(Color.white); g.drawArc(20, 20, 100, 100, 0, 360); ///此方法将画一个直径100的圆.红色. } } }


分享标题:java画圆形的代码 java绘制圆形
转载源于:http://scyanting.com/article/docjcic.html