how to do the maximum of three numbers in java

1public class Example {
2   public static void main(String args[]) {
3      int num1 = 15;
4      int num2 = -5;
5      int num3 = 7;
6      if (num1 >= num2 && num1 >= num3)
7         System.out.println( num1 + " is the maximum number.");
8      else if (num2 >= num1 && num2 >= num3)
9         System.out.println( num2 + " is the maximum number.");
10      else
11         System.out.println( num3 + " is the maximum number.");
12   }
13}