写一个方法void triangle(int a,int b,int c)，判断三个参数是否能构成一个三角形。如果不能则抛出异常IllegalArgumentException，显示异常信息：a,b,

package triangle;
import java.lang.*;
public class Triangle {
public void triangle(int a, int b, int c) throws IllegalArgumentException {
if ((a + b > c) && (c - a < a))
System.out.println(a + "," + b + "," + c);
else
throw new IllegalArgumentException();//方法抛出异常，导致方法结束
}
}

package triangle;
import java.util.Arrays;
import java.util.Scanner;

public class Main {
public static void main(String srgs[]) {
int arr[] = new int[3];
Scanner input = new Scanner(System.in);
System.out.println("请输入三角形三条边：");
try {
for (int i = 0; i < arr.length; i++) {
arr[i] = input.nextInt();
}
Arrays.sort(arr);
Triangle triangle = new Triangle();
triangle.triangle(arr[0], arr[1], arr[2]);//调用三角形判断函数
} catch (IllegalArgumentException e) {
System.err.println("不能构成三角形");
e.printStackTrace();
}
}
}