The boolean keyword in Java programming language

The boolean keyword in java programming language

In this tutorial , We will learn about the boolean keyword in java programming language

In Java language, Boolean is used to declare a variable as a boolean type. This represents only either true or false(Zero or one).

In Java language, default boolean value is initialized with false;

Declare a boolean variable

Syntax

syntax of float data type declaration

boolean <variable_name> = <boolean_value>;

Example

Example for float data type declaration

boolean  isSmallest=true;

The boolean keyword can be used to declare a return type of method in Java

Declare a boolean method

Syntax

<access_modifier> <return_type> <method_name>;
{
return <method_name>;
}

Example

public boolean Islargest()
{
return getBalance;
}

Example of boolean variable with in class

public class Example _boolean{  // this is a class in java
public static void main(String args[]){ // this is a main method in java
}
public boolean Iscorrect(){  // this is a boolean method which returns value;
}
}

Example

public class Boolean_Key{
    public static void main(String args[]){
     int age=20;
     boolean a=true, b=false;
        if(age>18){
          System.out.println(a);
                  }
        else{
           System.out.println(a);
            }
        }
    }

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