java program to find the largest in three numbers using nested if

1// Java program to find largest of four numbers using nested if
2public class LargestNestedIfDemo 
3{
4   public static void main(String[] args) 
5   {
6      int num1 = 36, num2 = 35, num3 = 56;
7      if(num1 >= num2) 
8      {
9         if(num1 >= num3)
10         {
11            System.out.println(num1 + " is largest number.");
12         }
13         else
14         {
15            System.out.println(num3 + " is largest number.");
16         }
17      } 
18      else 
19      {
20         if(num2 >= num3)
21         {
22            System.out.println(num2 + " is largest number.");
23         }
24         else
25         {
26            System.out.println(num3 + " is largest number.");
27         }
28      }
29   }
30}

1public class Main{public static void main(String[] args) {double a = 500, b = 1000, c = 1500;if( a >= b && a >= c)System.out.println(a + " largest number");else if (b >= a && b >= c)System.out.println(b + " largest number");elseSystem.out.println(c + " largest number");}}