WhileLoop.java

package Phase1_CoreLanguage.Loops;

/**A while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition.
 * The while loop can be thought of as a repeating if statement.
 * While Loop first check the condition if the condition is true then it'll execute else exit form the loop.
 * <p>
 *
 * Syntax :
 *             While(boolean condition){
 *                    loop body
 *             }
 * <p>
 *
 * FlowChart:
 * <p>
 *
 * Start ----->Condition Check----->if true----->Loop Body Execute --------->Condition Check----->if false----->Exit
 * <p>
 *
 * While loop starts with the checking of condition.
 * If it evaluated to true, then the loop body statements are executed otherwise first statement following the loop is executed.
 * For this reason it is also called Entry control loop
 * Once the condition is evaluated to true, the statements in the loop body are executed.
 * Normally the statements contain an update value for the variable being processed for the next iteration.
 * When the condition becomes false, the loop terminates which marks the end of its life cycle.**/
public class WhileLoop {
    public static void main(String args[])
    {
        int x = 1;

        // Exit when x becomes greater than 4
        while (x <= 4)
        {
            System.out.println("Value of x:" + x);

            // Increment the value of x for
            // next iteration
            x++;
        }
    }


    //OUTPUT
    //Value of x:1
    //Value of x:2
    //Value of x:3
    //Value of x:4
}