Java While Loop

Front

What is a Java while loop?

Back

A control flow statement used to execute a block of statements repeatedly until a given condition evaluates to false.

Front

What happens when the condition of a while loop becomes false?

Back

The line immediately after the loop in the program is executed.

Front

What is the syntax of a while loop in Java?

Back

Front

What is the purpose of the test expression in a while loop?

Back

It is evaluated before each iteration; if true, the loop executes; otherwise, the loop exits.

Front

What does the update expression do in a while loop?

Back

It increments or decrements the loop variable by some value after executing the loop body.

Front

What is the output of the following code when c is initialized to 1?

Back

Front

What will happen if curly braces are not provided after the while condition?

Back

The while statement will consider the immediate one statement to be inside its block.

Front

What is the execution flow of a while loop?

Back

1. 1. Control enters the while loop.

2. 2. The condition is tested.

3. 3. If true, execute the body of the loop.

4. 4. If false, exit the loop.

5. 5. After executing the body, update the loop variable.

6. 6. Repeat from step-2 until the condition is false.

Front

How can you exit a while loop prematurely?

Back

You can use the 'break' statement to exit a while loop before the condition evaluates to false.

Front

What is the difference between a while loop and a do-while loop?

Back

A while loop checks the condition before executing the loop body, while a do-while loop executes the body at least once before checking the condition.