WHILE LOOP JAVA HOW TO
In this Java Tutorial, we learned how to iterate or traverse through a Java Array using While Loop. In the following program, we will access first element, leave the second, then access the third, and leave the fourth and so on. We start with an index of zero, condition that index is less than the length of array, and increment index inside while loop.ĭuring each iteration, we have access to index and the array itself, using which we can access the element.Ģ Example 3 – Access Element of Java Array in Steps using While Loopīy incrementing index inside the while loop not by one but more than one, you can hop over the loop, accessing only some elements and interleaving some. In the following program, we initialize an array of integers, and traverse the array from start to end using while loop.
WHILE LOOP JAVA CODE
Statement 3 increases a value (i++) each time the code block in the loop has been executed.Example 1 – Iterate Java Array using While Loop
If the condition is true, the loop will start over again, if it is false, the loop will end. What happens if the condition is true in a loop? The Java while loop is a control flow statement that executes a part of the programs repeatedly on the basis of given boolean condition. The Java for loop is a control flow statement that iterates a part of the programs multiple times.
while loop: A while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition. While all the ways provide similar basic functionality, they differ in their syntax and condition checking time. Java provides three ways for executing the loops. What are the different ways to execute a loop in Java? By this, we can say, Java while loop may compile zero or more. If the condition is false, the Java while loop will not run at least once. Java While loop start by verifying the condition, if it is true, the code within this will run. While all the ways provide similar basic functionality, they differ in their syntax and condition checking time. The Java while loop is to iterate a code block for a given number of times till the condition inside it is False. Looping in programming languages is a feature which facilitates the execution of a set of instructions/functions repeatedly while some condition evaluates to true. The while loop is considered as a repeating if statement. As soon as the Boolean condition becomes false, the loop automatically stops. The Java while loop is used to iterate a part of the program repeatedly until the specified Boolean condition is true. When the continue command is met, the Java Virtual Machine jumps to the next iteration of the loop without executing more of the while loop body. The continue command is placed inside the body of the while loop. Java contains a continue command which can be used inside Java while (and for ) loops. When the number of times is not known before hand, we use a “While” loop. For example, if we want to check the grade of every student in the class, we loop from 1 to that number. It repeats a statement or block while its controlling expression. The while loop is Java’s most fundamental loop statement.
The textExpression is evaluated once again.Ī “For” Loop is used to repeat a specific block of code a known number of times. In this quick article, we will learn how to use while loop with examples.If the textExpression evaluates to true, the body of the loop inside the do statement is executed again.The body of the loop is executed at first.If the number of iteration is fixed, it is recommended to use for loop. The Java for loop is used to iterate a part of the program several times.
In the body of do loop, we have written two statements: One statement is printing the current value of i and the another statement i.e. The value 1 is taken because we have to print from the number 1. In the above program, we have declared and initialized the variable i1.
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