1.写一个名为Rectangle的类表示矩形。其属性包括宽width、高height和颜色color，width和height都是double型的，而color则是String类型的。要求该类具有：
(1) 使用构造函数完成各属性的初始赋值
(2) 使用get…()和set…()的形式完成属性的访问及修改
(3) 提供计算面积的getArea()方法和计算周长的getLength()方法
实验代码
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 height,double width,String color ){
this.setHeight(height);
this.setWidth(width);
this.setColor(color);
}
public void getArea(){
double area = 0;
area = this.height*this.width;
System.out.println("矩形的面积" + area);
}
public void getGirth(){
double girth = 0;
girth = (this.height + this.width)*2;
System.out.println("矩形的周长" + girth);
}
public String toString(){
String recStr = "矩形的高度:" + this.getHeight() + "矩形的高度:" + this.getWidth() + "颜色:" + this.getColor();
return recStr;
}
public static void main(String args[]){
Rectangle rec = new Rectangle(8,9,"黑色");
rec.getArea();
rec.getGirth();
System.out.println(rec.toString());
}
}
原文：https://www.cnblogs.com/buxiu888/p/11536002.html
