Whats wrong with my code?Please help

package com.codegym.task.task04.task0419; /* Maximum of four numbers */ import java.io.*; import java.util.Scanner; public class Solution { public static void main(String[] args) throws Exception { //write your code here Scanner in = new Scanner(System.in); int fnum =1; int snum =1; int tnum =1; int fonum =2; int temp=0; int arr[]={fnum,snum,tnum,fonum}; for(int i=0; i<arr.length;i++){ if(arr[i]>temp){ temp=arr[i]; }} System.out.println(temp); } }