Java While loop start by verifying the condition, if it is true, the code within the while loop will run. It's … An if statement tells the program that it must carry out a specific piece of code if a condition test evaluates to true. Java Tutorials - Herong's Tutorial Examples ∟ Control Flow Statements ∟ "while" Statements This section describes 'while' statement, which is a looping statement that executes the contained statement repeatedly while a given condition is true. The while loop in Java has the exact syntax of the while loop in C. But, a matter of notice is that, Java is a strongly typed language. Java If-else Java Switch Java For Loop Java While Loop Java Do While Loop Java Break Java Continue Java Comments Java Programs Java Object Class Java OOPs Concepts Naming Convention Object and Class … In this tutorial, we learn to use it with examples. i.e, we can place an if statement inside another if statement. Output: i is smaller than 15; nested-if: A nested if is an if statement that is the target of another if or else. So a single-line while loop can be re-written without the brackets, like this: The statement is given in the do while loop, the statement execute for one time after that it only gets executed … If the expression is true, statement is executed. Java Control Statements Java Decision Making Java if Statements Java if-else Statements Java else-if Statements Java switch Statements Java Loops Java while loops Java do-while loops Java for loops Difference Between Break and Continue Statements in java The while loop can be thought of as a repeating if statement. The Java while loop is to iterate a code block for a given number of times till the condition inside a loop is False. Additionally, the same rule of shortening if and else statements applies to while. ; If an else statement is present another section of code will bee executes if the condition test evaluates to false. The do while loop also contains one condition which can true or false. If you run the above example, the loop will execute for infinite and print the number repeatedly with an increment of the value.. Java Do While Loop. Java Program to Print all Even Numbers till N - In this tutorial, we shall go through two different algorithms, each of which can be implemented with while or for loop, and write Java programs for these examples to display all even numbers. Syntax: while (test_expression) { // … First of all, let's discuss its syntax: while (condition(s)) {// Body of loop} 1. while loop in Java. The basic syntax is this: while (expression) statement The while statement begins by evaluating the expression. Nested if statements means an if statement inside an if statement. The body of the while loop can be empty, and sometimes developers like to write shorthand while loops when possible. In Java, a while loop is used to execute statement(s) until a condition is true. So, the condition in the while statement must yield a boolean value. We have a common practice of writing while loops in C as – int i = 10; while (i--) { // code } If the condition(s) holds, then the body of the loop is executed after the execution of the loop body condition is tested again. The if statement is probably the most common form of flow control, regardless of the language. Yes, java allows us to nest if statements within if statements. Java loops and conditional statements Java if and if-else conditional statement. Then the expression is evaluated … If the condition is false, the Java while loop will not run at least once. In Java, there are several ways to control the flow of the code: if and if-else statements; switch statements; while and do-while statements; for and enhanced for statements; break and continue statements; The if Statement. Loops in Java come into use when we need to repeatedly execute a block of statements.. Java while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition. A while statement in Java programming creates a loop that executes continuously as long as some conditional expression evaluates to true.