4th Quarter Summative Exam

What is the purpose of a switch statement in Java?

• To handle exceptions in the code

• To repeat the execution of a block of code

• To declare variables with different data types

• To execute different blocks of code based on the value of an expression.

How is a for loop different from a while loop?

• A for loop is used for an indefinite number of iterations, while a while loop is used for a specific number of iterations.

• A for loop is used for an indefinite number of iterations, while a while loop is used for an indefinite number of iterations.

• A for loop is used for a specific number of iterations, while a while loop is used for a specific number of iterations.

• A for loop is used for a specific number of iterations, while a while loop is used for an indefinite number of iterations.

Explain the syntax of a for each loop in Java.

• for (dataType element : arrayOrCollection) { // code block }

• for (int i = 0; i < arrayOrCollection.length; i++) { // code block }

• for (dataType element : arrayOrCollection) // code block

• for (dataType element : arrayOrCollection) { // code block

What is the advantage of using a for each loop over a traditional for loop?

• Reduces code efficiency

• Increases code complexity

• Requires more lines of code

• Simplifies syntax and improves readability

How can you break out of a nested loop in Java?

• Use a continue statement

• Use a labeled break statement

• Throw an exception

• Use a return statement

When would you use a nested loop in Java programming?

• When you need to perform a single iteration over a collection

• When you want to skip elements in a collection

• When you want to break out of a loop early

• When you need to iterate over a collection of elements, and for each element, iterate over another collection of elements.

What is the output of the following code snippet? int x = 5; switch(x) { case 1: System.out.println("One"); break; case 5: System.out.println("Five"); break; default: System.out.println("Default"); }

• Two

• Five

• Three

• One

How many times will the following for loop iterate? for(int i = 0; i < 5; i++) { System.out.println(i); }

• 5

• 4

• 6

• 3

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

• for(int i = 0; i < 5; i++) { for(int j = 0; j < 3; j++) { // inner loop code here }}

• for(int i = 0; i < 5; i++) { for(int j = 0; j < 3; j++) { // inner loop code here }

• for(int i = 0; i < 5; i++) { for(int j = 0; j < 3; j++) { // inner loop code here }

• for(int i = 0; i < 5; i++) { for(int j = 0; j < 3; j++) { // inner loop code here }

What is the purpose of the continue keyword in a loop?

• To end the loop immediately

• To skip the current iteration and move to the next iteration in the loop.

• To restart the loop from the beginning

• To print a message to the console