rectangle.java

多个java程序

import java.lang.Math;


public class Rectangle {
	double x1;
	double x2;
	double y1;
	double y2;
	
	public Rectangle(){
		 x1=0;
		 x2=0;
		 y1=1;
		 y2=1;
	}
	
	public Rectangle(double x11,double y11,double x12,double y12 ){
		x1=x11;
		y1=y11;
		x2=x12;
		y2=y12;
	}
	
	double getSqure(){
		return Math.abs(x1-x2)*Math.abs(y1-y2); 
	}
	
	
}