三角形的两边长大雨另一边

import java.util.Scanner;
public class Triangle {
    public static void main(String[] args){
        double d;
        System.out.println("请输入三角形的三条边的长度！");
        Scanner input = new Scanner(System.in);
        double a = input.nextDouble();
        double b = input.nextDouble();
        double c = input.nextDouble();
        if(a <= b){
            d = a;
            a = b;
            b = d;
            if(a <= c){
                d = a;
                a = c;
                c = d;
            }
        }
        if(a >= b + c){
            System.out.println("Can edges " + a + "," + b + " and " + c + " form a triangle? false");
        }
        else{
            System.out.println("Can edges " + a + "," + b + " and " + c + " form a triangle? ture");
        }
    }
}

读取三角形的三条边，并确定输入是否有效。如果另外两边和大于另一边则输入有效。