The while keyword in Java programming language

The while keyword in Java programming language

We will learn about the while keyword in Java programming language

In Java programming language, while is a keyword used in the while and do while loop. The while  specifies a loop that executes a block of statements repeatedly until given  condition(Boolean expression) is true. In the while loop test expression similar to if condition (based in Boolean expression-returns true or false)

Syntax

Syntax of the while keyword

while(condition){

statement(s) //block of statements

}

Example

Example of using while keyword

while(i>=10){ //boolean expression
System.out.println(i); // display statements
i--; // increment statement;
}

The logic  executes a block of statements until the boolean expression returns true. It is terminated when the boolean expression returns as false

Program

class WhileInJava{
public static void main(String args[]){
int i=1;       //variable declaration
while(i<=5) {   //using while keyword to while loop

//display the output
System.out.println("The value of i is :"+i);

i++;   //updating statements
            }
        }
    }

 

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

The value of i is :1
The value of i is :2
The value of i is :3
The value of i is :4
The value of i is :5

 

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