Java if-else Statement: A Simple Example with Code

Here's a simple example of how to use the Java if-else statement:

int num = 10;

if (num > 0) {
   System.out.println(num + ' is a positive number.');
}
 else {
   System.out.println(num + ' is a negative number.');
}

This code checks if the variable 'num' is greater than 0. If it is, the code inside the 'if' block will execute, printing out that 'num' is positive. If 'num' is not greater than 0 (meaning it's 0 or negative), the code inside the 'else' block will execute, printing out that 'num' is negative.