Core Java Programming Course- "While" and "Do While" Loop in Java

This video tutorial covers the concepts of 'while' and 'do while' loops in programming. It begins with a comparison to the 'for' loop, explaining how loop variables and conditions work. The 'while' loop is introduced with an example where a variable is decremented until a condition is met. The tutorial then transitions to the 'do while' loop, highlighting its unique feature of executing the loop body at least once, even if the condition is false initially. Examples are provided to illustrate the differences and similarities between the two loop types.

What is the primary condition for a 'while' loop to continue executing?

• The loop variable must be incremented.

• The loop variable must be a string.

• The condition must remain true.

• The loop must have a break statement.

In a 'do while' loop, what happens if the condition is false initially?

• The loop executes indefinitely.

• The loop executes once and then checks the condition.

• The loop throws an error.

• The loop does not execute at all.

Which loop guarantees at least one execution of its code block?

• For loop

• Infinite loop

• While loop

• Do while loop

What is the key difference between 'while' and 'do while' loops?

• 'While' loop requires a break statement.

• 'Do while' loop checks the condition before executing.

• 'While' loop executes at least once.

• 'Do while' loop executes at least once regardless of the condition.

If a 'do while' loop has a condition that is never true, how many times will it execute?

• Indefinitely

• Twice

• Once

• Zero times