那怎么表達呢？

只能用c++寫么 我電腦沒有編寫c++的

/** 求兩點之間的距離 **/ import java.util.*; public class Point1 { private double x; private double y; private double z; public Point1(double x,double y) { this.x = x; this.y = y; } public void setX(double x) { this.x = x; } public void setY(double y) { this.y = y; } public double getDistance(){ return Math.sqrt(Math.pow(x,2)+Math.pow(y,2)); } public static void main(String[] args) { Scanner s = new Scanner(System.in); double a = s.nextDouble(); double b = s.nextDouble(); Point1 point = new Point(a,b); double distance = point.getDistance(); if(distance > 1) { System.out.println("true"); }else { System.out.println("false"); } } }