If ... Else

Control Flow Statements in Java:-

Control flow statements are used to control the flow of execution of a Java program.
They allow you to make decisions, repeat blocks of code, and exit loops prematurely.

If-Else statement:-

The If-Else statement is the simplest conditional statement in Java. It allows you to execute different blocks of code depending on whether a condition is true or false.

Example

int age = 17;
 if (age > 18) {
  System.out.println("You are an adult.");
  } else {
  System.out.println("You are not an adult.");
  }

RUN EXAMPLE

Example

  int age = 17;

if (age >= 18) {
  System.out.println( "You are an adult.");
 } else if (age >= 13) {
 System.out.println("You are a teenager.");
} else {
  System.out.println( "You are a child.");
  }

RUN EXAMPLE

Example

 String input =  "hello";

 switch (input) {
  case "hello":
 System.out.println( "Hello!");
  break;
 case "CodeLines"
   System.out.println( "CodeLines!");
  break;
  default:
  System.out.println( "I don't understand your input.");
}

RUN EXAMPLE