Java if-else Statement: Conditional Execution in Programming

Java 'if-else' is a conditional statement used in programming to execute a block of code only when a certain condition is met. It's also known as a decision-making statement.

The syntax for the 'if-else' statement in Java is as follows:

if (condition) {
  // block of code to be executed if the condition is true
} else {
  // block of code to be executed if the condition is false
}

The 'condition' in the 'if' statement can be any expression that evaluates to a boolean value (true or false). If the condition is true, the block of code within the curly braces will be executed. If the condition is false, the block of code within the 'else' statement will be executed.

Here's an example of the 'if-else' statement in Java:

int num = 10;
if (num % 2 == 0) {
  System.out.println('The number is even.');
} else {
  System.out.println('The number is odd.');
}

In this example, the condition checks whether the remainder of the variable 'num' divided by 2 is equal to 0. If it is, the program will print 'The number is even.' If it is not, the program will print 'The number is odd.'