Write a program to find the operator between number

import java.util.*; public class arraysquare { public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println("Enter n1 and n2:"); int n1=sc.nextInt(); if(n1>0) { int n2=sc.nextInt(); if(n2>0) { System.out.println("Enter n3:"); int n3=sc.nextInt(); if(n3>0) { if(n1+n2==n3) { System.out.println(n1+"+"+n2+"="+n3); } else if(n1-n2==n3) { System.out.println(n1+"-"+n2+"="+n3); } else if(n1*n2==n3) { System.out.println(n1+"*"+n2+"="+n3); } else if(n1/n2==n3) { System.out.println(n1+"/"+n2+"="+n3); } else { System.out.println(n3+" is an invalid answer"); } } else{ System.out.println("Invalid"); } } else{ System.out.println("Invalid"); } } else{ System.out.println("Invalid"); } } }