Java、MyPoint类

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                MyPoint
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-x: double
-y: double
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+MyPoint()
+MyPoint(x: double, y: double)
+distance(point: MyPoint): double
+distance(x: double, y: double): double
+getX(): double
+getY(): double
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package pack2;

public class MyPoint {
	private double x, y;	//x、y坐标
	
	
	public MyPoint() {
		this(0, 0);
	}

	
	public MyPoint(double x, double y) {
		this.x = x;
		this.y = y;
	}

	
	public double distance(MyPoint point) {
		return Math.sqrt(Math.pow(x - point.getX(), 2) + Math.pow(y - point.getY(), 2));
	}
	
	
	public double distance(double x, double y) {
		return Math.sqrt(Math.pow(x - this.x, 2) + Math.pow(y - this.y, 2));
	}
	
	
	public double getX() {
		return x;
	}

	
	public double getY() {
		return y;
	}

//——————————————————————————————————————————————————
	public static void main(String[] args) {
 		System.out.println("The distance is " + new MyPoint().distance(new MyPoint(10, 
                 30.5)));
	}

}