Readers ask: Java While Ou?

Do While Java vs while?

So, the While loop executes the code block only if the condition is True. In Java Do While loop, the condition is tested at the end of the loop. So, the Do While executes the statements in the code block at least once even if the condition Fails.

How do you do a while loop in Java?

Java do while loop syntax is as follows: do { // statements } while (expression); The expression for the do-while loop must return a boolean value, otherwise, it will throw compile-time error.

What is do-while loop in Java?

The Java do-while loop is used to iterate a part of the program repeatedly, until the specified condition is true. Therefore, unlike while loop and for loop, the do-while check the condition at the end of loop body. The Java do-while loop is executed at least once because condition is checked after loop body.

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Can a while loop have two conditions Java?

As seen on line 4 the while loop has two conditions, one using the AND operator and the other using the OR operator. Note: The AND condition must be fulfilled for the loop to run.

What is the similarity between while and do-while?

do while loop is similar to while loop with the only difference that it checks for the condition after executing the statements, and therefore is an example of Exit Control Loop.

Is there a do-while in Java?

Java do-while loop is an Exit control loop. Therefore, unlike for or while loop, a do-while check for the condition after executing the statements or the loop body.

What are the 3 types of loops?

Loops are control structures used to repeat a given section of code a certain number of times or until a particular condition is met. Visual Basic has three main types of loops: for.. next loops, do loops and while loops.

What is while loop example?

A “While” Loop is used to repeat a specific block of code an unknown number of times, until a condition is met. For example, if we want to ask a user for a number between 1 and 10, we don’t know how many times the user may enter a larger number, so we keep asking “while the number is not between 1 and 10”.

What are the 3 types of loops in Java?

In Java, there are three kinds of loops which are – the for loop, the while loop, and the do-while loop. All these three loop constructs of Java executes a set of repeated statements as long as a specified condition remains true.

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How do while loops work?

Overview. A do while loop is a control flow statement that executes a block of code at least once, and then repeatedly executes the block, or not, depending on a given boolean condition at the end of the block. Some languages may use a different naming convention for this type of loop.

How do you end a while loop in Java?

Java do-while Loop

  1. The do-while statement ends with a semicolon.
  2. The condition-expression must be a boolean expression.
  3. The statement can be a simple statement or a block statement.
  4. The statement is executed first then the condition-expression is evaluated.
  5. If it evaluates to true, the statement is executed again.

Do you want to continue in Java?

println(“Do you want to continue y or n”); String c = input. nextLine(); if(c. equalsIgnoreCase(“n”)){ break; }//else continue to loop on any string;-) }

Can you put an if statement inside a while loop Java?

If you check inside the loop then it will not work it will still multiply the fact. You need to make sure that the num is not negative before you start the while loop. int num = 0; do { if (num<0){ System.

Can we use or operator in while loop?

Use of Logical operators in while loop -using AND(&&) operator, which means both the conditions should be true. – OR(||) operator, this loop will run until both conditions return false.

Can while loop have multiple conditions?

Python While Loop Multiple Conditions. To combine two conditional expressions into one while loop, you’ll need to use logical operators.

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