The if keyword in Java programming language

The if keyword in Java programming language

In this tutorial,we will learn about The if  keyword in Java programming language

In Java if  keyword in java  is used to  if statement to test the boolean expression.  It indicates conditional execution of a block. The condition must be evaluated to a boolean value.

An if statement may have an optional else clause containing code that is executed when the condition is false.

Syntax

Syntax of if keyword in java

if(boolean condition)
{
<statements>
}

Syntax of if  keyword with else keyword in java

if(boolean condition)
{  //It is executed when boolean condition is false 
<statements>
}
else // it is optional and executed when boolean condition is false 
{
<statements>
}

Example

class If_key{
public static void main(String args[]){
if(test_expression){
System.out.println("if condition is true this statements is executed");

}
else{
System.out.println("if condition is false this statements is executed");
}
}
}

//else is a optional part in this program

Program

class If_Ex{
public static void main(String args[]){
int age=18;
if(age<=19){
System.out.println("you are a teen age boy");

}
else{
System.out.println("you are a person");
}

}

}

When the above code is compiled and executed, it will produce the following results

you are a teen age boy

 

There are other Java language keywords that are similar to this keyword

try keyword in Java

Catch keyword in Java

implements keyword in java

public Key words in Java

static keyword in Java language

Volatile Keyword in Java

Transient keyword in Java

Package keyword in Java

class keyword in Java

boolean keyword in Java

break keyword in Java

do keyword in Java

double keyword in Java

This keyword in Java

final keyword in Java

switch keyword in Java

interface keyword in java

extends keyword in Java language

 

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