+测试 mport ja int a, b, c; void judge Scanner inane a=3,b=4,c=5 Scanner(System. in) System. out println(" Please enter a, b, c:) a=in. nextinto; b=in. nextlnto; c=in nextlnto: if(a< b<olIc<o) a=4,b=4,c=5 System. out. printin("Error input! ) else if(a+b<=c‖b+c≤=a‖l a+c≤=b) System. out. printin(“not else if(a==b & b=c && a==c) a=4,b=4,c=4 ystem out printin(equilateral riangle! ") else if(a=b‖b==c‖a==c) System. out println(isosceles triangle!"); else System. out printin("only a triangle!):1 a=2,b=4,c=5 public class triangle public static void main(stringl rgs)( Hu che =new HuO he judge 0:]+测试 import java.util.*; class Hu { int a,b,c; void judge() { Scanner in=new Scanner(System.in); System.out.println( “Please enter a,b,c:”); a=in.nextInt();b=in.nextInt();c=in .nextInt(); if(a<0||b<0||c<0) System.out.println( “Error input!”); else if(a+b<=c || b+c<=a || a+c<=b) System.out.println( “not a triangle! ” ) ； else if(a==b && b==c && a==c) System.out.println( “equilateral triangle! ”); else if(a==b || b==c || a==c) System.out.println( “isosceles triangle!”); else System.out.println( “only a triangle! ”);} } public class triangle{ public static void main(String[] args) { Hu che =new Hu(); che.judge();} } a c b a=3, b=4, c=5 a=4, b=4, c=5 a=4, b=4, c=4 a=2, b=4, c=5 …