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Java矩形代码话题已于 2025-08-08 01:46:18 更新
在main方法中,通过RectArea.getArea(10.0, 20.0)调用getArea方法,传入测试数据10.0作为宽度,20.0作为高度,并将计算结果输出为“矩形面积:400.0”。通过这个简单的程序,我们可以学习到如何在Java中进行基本的输入验证和简单的数学计算。值得注意的是,实际应用中应当考虑使用更健壮的输入验证机制,...
1、创建项目【Ex2_1】:2、创建类【Rectangle】:3、四个double类型:4、长(length)和宽(width)赋值,使用println()和new Scanner(System.in),具体解析见扩展内容。5、计算并输出:6、执行测试:
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....
} // 改变顶点坐标,即改变矩形坐标位置 public void location(double top, double left) { this.top = top;this.left = left;} // 改变宽,高,即改变矩形宽高 public void size(double width, double height) { this.width = width;this.height = height;} // 计算面积,宽×高 public ...
public class Rectangle{ private double width; private double height; private String color; public double getWidth(){ return width; } pulbic void setWidth(double width){ this.width = width; } public double getHeight(){ return height; } public String getColor(){ return color; } ...
import java.util.Scanner;public class Test{ //主函数 public static void main(String []args){ //扫描器 Scanner in =new Scanner(System.in);//提示信息 System.out.println("请输入长:");//定义一个变量,用来保存长 int a=in.nextInt();//提示 System.out.println("请输入宽:")...
public static void main(String[] args){ Rectangle r=new Rectangle(10,2,20,12.5);System.out.println(r.computerArea());} } class Rectangle{ private double left,top,right,bottom;private double height,width;public Rectangle(){ } //(left,top)矩形左上角 //(right,bottom)矩形右下...
System.out.println ("请输入矩形的长:");float a=in.nextFloat();System.out.println ("请输入矩形的宽:");float b=in.nextFloat();System.out.println ("矩形周长为:"+new Rectangle(a,b).getGirth());System.out.println ("矩形面积为:"+new Rectangle(a,b).getArea());} } ...
public class Rectangle{ private double rLength;private double rWidth;private double getLength(){ return this.rLength;} private double getWidth(){ return this.rWidth;} private void setLength(double length){ this.rLength = length;} private void setWidth(double width){ this.rWidth = ...
public static void main(String[] args) { Object[] array = new Object[5];Rect rect = new Rect(3, 4);//矩形 array[0] = rect;Circle circle = new Circle(7, 3.14);// 圆 array[1] = circle;Double d = new Double(5.2);// 双精度小数 array[2] = d;Float f = new...