rectangle.java

主要是对于JAVA的编程的基本语言 希望能够帮得上你。

package class_object;

public class Rectangle {

	int length,width;
	
	public Rectangle(int length, int width){
		this.length=length;
		this.width=width;
	}
	
	int perimeter(){
		return 2*(length+width);
	}
	
	int area(){
		return length*width;
	}
	
	void print(){
		System.out.println("perimeter="+this.perimeter());
		System.out.println("area="+this.area());
	}
	
	public static void main(String[] args) {
		Rectangle rect=new Rectangle(5,3);
		rect.print(); 
	}
}