Java Interview Guide : 200+ Interview Questions and Answers - Simple Puzzles on conditions and loops

The video tutorial covers advanced Java programming concepts, focusing on control flow statements. It emphasizes the importance of using blocks with if statements to avoid confusion and maintain code. The tutorial explains the difference between assignment and comparison operators, highlighting common pitfalls. It also delves into switch statements, discussing fallthrough and the placement of default cases. Enhanced for loops and infinite loops are introduced, followed by an explanation of break statements and the use of labels to control loop execution.

Why is it recommended to use blocks around if statements even if there is only one statement?

• To reduce the number of lines in the code

• To make the code look more complex

• To ensure future additions are part of the if block

• To make the code run faster

What is the main difference between assignment and comparison operators in if statements?

• Comparison operators are faster than assignment operators

• Assignment operators assign values, comparison operators compare values

• Comparison operators are used to assign values

• Assignment operators are used for mathematical operations

What happens in a switch statement when there are no break statements?

• All cases are executed until a break is found

• The program crashes

• The default case is executed immediately

• Only the matching case is executed

Can a switch statement in Java be used with strings?

• No, it can only be used with characters

• Yes, in all versions of Java

• No, it can only be used with integers

• Yes, but only in the latest versions of Java

What is an enhanced for loop primarily used for?

• Switching between different cases

• Handling exceptions

• Performing complex mathematical calculations

• Looping through arrays and lists

What does a break statement do in a loop?

• Continues to the next iteration

• Exits the innermost loop

• Restarts the loop

• Skips the current iteration

How can you break out of an outer loop using a break statement?

• By using a goto statement

• By using a continue statement

• By using a labeled break

• By using a return statement