testpoint.java

来自「北京尚学堂J2SE所有的源代码！！北京尚学堂J2SE所有的源代码！！」· Java 代码 · 共 29 行

class Point {
	double x, y, z;
	
	Point(double _x, double _y, double _z) {
		x = _x;
		y = _y;
		z = _z;
	}
	
	void setX(double _x) {
		x = _x;
	}
	
	double getDistance(Point p) {
		return (x - p.x)*(x - p.x) + (y - p.y)*(y - p.y) + (z - p.z)*(z - p.z);
	}
	
}

public class TestPoint {
	public static void main(String[] args) {
		Point p = new Point(1.0, 2.0, 3.0);
		Point p1 = new Point(0.0, 0.0, 0.0);
		System.out.println(p.getDistance(p1));
		
		p.setX(5.0);
		System.out.println(p.getDistance(new Point(1.0, 1.0, 1.0)));
	}
}