java中矩形图像的代码 java画矩形代码

JAVA,写一个名为Rectangle的类表示矩形

这个我做完了 希望您能满意

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public class Rectangle {

private double height;

private double width;

private String color;

public double getHeight() {

return height;

}

public void setHeight(double height) {

this.height = height;

}

public double getWidth() {

return width;

}

public void setWidth(double width) {

this.width = width;

}

public String getColor() {

return color;

}

public void setColor(String color) {

this.color = color;

}

public Rectangle(double width,double height,String color){

this.setColor(color);

this.setHeight(height);

this.setWidth(width);

}

public void getArea(){

double area=0;

area=this.height*this.width;

System.out.println("矩形的面积为"+area);

}

public String toString(){

String recStr="矩形的高度："+this.getHeight()+"宽度："+this.getWidth()

+"颜色:"+this.getColor();

return recStr;

}

/**

* 测试函数

* @param args

*/

public static void main(String[] args) {

Rectangle rec=new Rectangle(3, 4, "红色");

rec.getArea();

System.out.println(rec.toString());

}

}

如何用java写矩形平移和旋转后输出坐标的代码

import java.applet.Applet;

import java.awt.Graphics;

import java.awt.Color;

public class LX3_3 extends Applet {

public void paint(Graphics g) {

g.setColor(Color.red);//设置红颜色

g.drawOval(35,35,100,60);//画椭圆（圆心、宽和高）

g.fillOval(200,15,60,100);//画具有填充色的圆

g.setColor(Color.blue);//设置蓝颜色

g.drawRect(20,130,80,80);//画矩形

g.fillRect(120,130,80,80);//画具有填充色的矩形

g.drawRoundRect(220,130,80,80,20,20);//画圆角矩形

g.fillRoundRect(320,130,80,80,20,20);//画具有填充色的 圆角矩形

}

}

该程序是在Myeclipse的环境下运行的

在二维平面内，画长方形等都只需要改变点的坐标即可实现平移,旋转,缩放

上面还加入了颜色，可供参考

水平有限，但希望对你有帮助

java中做一个按钮，点击按钮后画一个矩形的代码怎么写？

兄弟帮你写了一个：

import java.awt.Button;

import java.awt.Color;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.util.Random;

public class Print {

public static void main(String[] args) {

new Te();

}

}

class Te extends Frame implements ActionListener {

Color cc = Color.red;

int x = -20, y = -50;

Random r = new Random();

public Te() {

this.setLayout(null);

Button b = new Button("画圆");

this.add(b);

b.setBounds(30,30,50,50);

b.addActionListener(this);

this.addWindowListener(new WindowAdapter () {

@Override

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

this.setBounds(200,200,500,400);

this.setVisible(true);

}

public void actionPerformed(ActionEvent e) {

this.cc = Color.red;

this.x = r.nextInt(400);

do {

int x1 = r.nextInt(300);

this.y = x1;

} while (this.y 50);

this.repaint();

}

@Override

public void paint(Graphics g) {

Color c = g.getColor();

g.setColor(cc);

g.drawRect(x,y,50,50);

g.setColor(c);

}

}

Java 编写一个矩形类Rect

public class Rect {

private double length;//矩形的长

private double width;//矩形的宽

public Rect() {}//默认构造器

public Rect(double length,double width) {

this.length = length;

this.width = width;

}

/**

* 取得矩形的面积

* */

public double getArea(){

return this.getLength() * this.getWidth();

}

/**

* 取得矩形的周长

* */

public double getPerimeter(){

return (this.getLength() + this.getWidth()) * 2;

}

/**

* 取得矩形的面积，需传入矩形长与宽

* */

public double getArea(double length,double width){

return length * width;

}

/**

* 取得矩形的周长，需传入矩形长与宽

* */

public double getPerimeter(double length,double width){

return (length + width) * 2;

}

public double getLength() {

return length;

}

public void setLength(double length) {

this.length = length;

}

public double getWidth() {

return width;

}

public void setWidth(double width) {

this.width = width;

}

}

画空心矩形的代码是什么？要java的。

以下是代码，可以参考一下，希望对您有帮助。

============================================

public class PrintStars {

private static final int LENGTH=10;

private static final int WIDTH=20;

public static void main(String[] args) {

for (int i = 0; i LENGTH; i++) {

if(i==0||i==LENGTH-1){

for (int j = 0; j WIDTH; j++) {

System.out.print("* ");

}

}else {

for (int j = 0; j WIDTH; j++) {

if(j==0||j==WIDTH-1){

System.out.print("* ");

}else {

System.out.print(" ");

}

}

}

System.out.println();

}

}

}