Java Programming Quiz

What is the purpose of using loops in Java programming?

• To create graphical user interfaces

• To perform mathematical calculations

• To print a string multiple times

• To handle user input

Which loop statement is used to execute a block of code repeatedly as long as a specified condition is true?

• for loop

• do-while loop

• if statement

• while loop

What is the output of the following code snippet? int count = 0; while (count < 2) { System.out.println("Welcome to Java!"); count++; }

• Welcome to Java! (printed four times)

• Welcome to Java! (printed thrice)

• Welcome to Java! (printed twice)

• Welcome to Java! (printed once)

Which loop is guaranteed to execute at least one time?

• if statement

• do-while loop

• while loop

• for loop

What is the correct syntax for a for loop in Java?

• for (int i = 0; i < 10; i--) { ... }

• for (int i = 0; i < 10) { ... }

• for (int i = 0; i < 10; i++) { ... }

• for (int i = 0; i++) { ... }

Which keyword is used to prematurely exit a loop in Java?

• stop

• exit

• break

• end

What is the purpose of the continue keyword in Java?

• To print a message and stop the loop

• To end the loop immediately

• To skip the current iteration and continue with the next one

• To restart the loop from the beginning

What is the main use of the Monte Carlo simulation technique?

• To solve mathematical problems using random numbers

• To analyze historical data

• To predict future stock prices

• To create graphical simulations

Tags

CCSS.7.SP.C.8C

What is the correct way to check if a string is a palindrome in Java?

• Compare the first and last characters only

• Count the number of vowels in the string

• Use a loop to compare characters from both ends

• Check if the string is reversed

Which problem can be solved using the Sieve of Eratosthenes algorithm?

• Searching for a substring in a string

• Calculating factorial

• Sorting an array

• Finding prime numbers