![]() Let’s look at a few examples of how to use a do-while loop in Java. The do-while loop is declared with the reserved word do, followed by curly brackets while (condition) Examples: Do-while loop in Java.The do-while loop has many similarities with the while loop in functionality, but pay attention to the differences in the declaration. If we illustrate the do-while loop with a flow chart, we get figure 1 below. Here, the size variable is assigned with the value Large. Since the value matches with 44, the code of case 44 is executed. The variable is compared with the value of each case statement. Therefore, the statements within the do block are always executed at least once Oracle docs How the do-while loop in Java works?Īs mentioned, the do-while loop works similarly to the while loop that we saw on in the previous article. In the above example, we have used the switch statement to find the size. The difference between do-while loop and while loop is that do-while evaluates its expression at the bottom of the loop instead of the top. Best suited when the number of iterations of the loop is not fixed.Enables general and dynamic programs because you can reuse code. In a do-while loop, the body of the loop is executed at least one time, whereas in a while loop, the loop may never execute if the loop condition is false. Break statement in java is used to terminate loops and switch case statements immediately without checking the test expression and the control of the.Executes the operations in the code block first and then evaluates the condition.A loop that repeats a sequence of operations as long as a condition is true.In other words, the do-while loop performs all operations at least once. The difference between a do-while loop and a while loop is that the do-while loop performs the code block with all the operations first, and then evaluates the loop’s condition. This means repeating a code sequence, over and over again, until a condition is true. The do-while loop is, as the name suggests, closely related to the while loop and therefore also a condition loop. We will end the articles with a couple of examples that show the differences compared to the regular while loop and when the do-while loop may be favoured. We will see how we can use the do-while loop to first execute the loop’s code block, and then evaluate the condition. A do-while loop is a conditional loop that is closely related to the while loop. The final article in this chapter will look at the do-while loop in Java. In computer programming, loops are used to repeat a block of code. Array: Areas of use and built-in methods Java while and do.while Loop In this tutorial, we will learn how to use while and do while loop in Java with the help of examples.Introduction to Java: Learn Java programming.Algorithms: give the computer instructions.Introduction to Python: Learn Python programming.When the program is run, the statements are executed from the top of the source file to the bottom. This is why the code in case 6 was executed. The if, else, and switch statements are used for testing conditions, the while and for statements to create cycles, and the break and continue statements to alter a loop. The value of month is 6 so it matches with case 6. That is, performing repetitive tasks until a certain condition is met. ![]() ![]() The value of month, which is acting as the expression for the switch statement, will be compared with every case value in the code. Java, as most programming languages, fully supports looping. Loop statements may have an else clause it is executed when the loop. Here's what the syntax looks like: switch(expression). The break statement, like in C, breaks out of the innermost enclosing for or while loop. ![]() ![]() You use the switch statement in Java to execute a particular code block when a certain condition is met. ![]()
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