java 接口练习题6

public class Point {
    private int a,b,c;
    Point (int a,int b,int c)
    {
        this.a=a;
        this.b=b;
        this.c=c;
    }
    public int getA() {
        return a;
    }
    public void setA(int a) {
        this.a = a;
    }
    public int getB() {
        return b;
    }
    public void setB(int b) {
        this.b = b;
    }
    public int getC() {
        return c;
    }
    public void setC(int c) {
        this.c = c;
    }
    public void Juli()
    {
        System.out.println("坐标"+a+","+b+","+c+"距离原点的距离的平方="+(a*a+b*b+c*c));
    }
    public static void main(String[] args) {
        Point p=new Point(2,2,2);
        p.Juli();
        p.setA(3);
        p.setB(5);
        p.setC(9);
        p.Juli();
    }