Java Control Statements Quiz

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Questions and Answers

What type of statements are used to control the flow of Java code?

Conditional statements
Jump statements
Control flow statements (correct)
Loop statements

What type of expression do conditions in Java evaluate to?

Character
Boolean (correct)
String
Numeric

Which statement is used to exit a loop or switch statement in Java?

break (correct)
stop
continue
exit

Which keyword is used to define an if-else statement in Java?

else (B) Signup and view all the answers

What type of loop in Java guarantees that the loop body will be executed at least once?

do-while loop (D) Signup and view all the answers

Which of the following represents the equivalent of logical OR operator in Java?

| (A) Signup and view all the answers

What is the purpose of the else statement in Java?

To specify a block of code to be executed if the condition is false (C) Signup and view all the answers

In Java, when is the else if statement used?

To specify a new condition to test, if the first condition is false (D) Signup and view all the answers

What does the following Java code do? int number = 10; if (number < 0) { System.out.println('The number is negative.'); }

Prints 'Statement outside if block' (C) Signup and view all the answers

In Java, what does the nested if-statement syntax allow for?

Allows an if or else-if statement inside another if or else-if statement (C) Signup and view all the answers

What will be printed when executing the following Java code? int time = 22; if (time < 10) { System.out.println('Good morning.'); } else if (time < 18) { System.out.println('Good day.'); } else { System.out.println('Good evening.'); }

Good evening. (C) Signup and view all the answers

What is the purpose of the switch statement in Java?

To specify many alternative blocks of code to be executed (D) Signup and view all the answers

What are the conditions under which the else statement in Java will be executed?

Only when the specified condition in the if statement is false (C) Signup and view all the answers

In Java, what is the role of the 'else' statement in nested conditional statements?

It executes when none of the nested conditions are true. (B) Signup and view all the answers

In Java, what happens when a 'break' statement is encountered within a 'switch' block?

It causes the program to exit from only the switch structure. (B) Signup and view all the answers

Which type of control flow statement in Java guarantees that the loop body will be executed at least once?

do while loop (B) Signup and view all the answers

In Java, which statement is used to exit a loop or switch statement?

break statement (A) Signup and view all the answers

What type of expression do conditions in Java evaluate to?

Boolean (C) Signup and view all the answers

What is the role of the 'else' statement in nested conditional statements in Java?

To execute a different code block (B) Signup and view all the answers

When is the else if statement used in Java?

To handle multiple conditions without nesting if statements (C) Signup and view all the answers

What keyword is used to define an if-else statement in Java?

'if' (A) Signup and view all the answers

What is the purpose of the 'else' statement in Java conditional statements?

To specify an alternate block of code to be executed if a condition is false (D) Signup and view all the answers

In Java, what does the 'else if' statement allow for?

Specifying a new condition to test if the first condition is false (C) Signup and view all the answers

In Java, what is the role of nested if-statements?

To contain a series of if or else-if statements inside another if or else-if statement (B) Signup and view all the answers

What happens in Java when a 'break' statement is encountered within a 'switch' block?

The program exits the switch statement and continues executing the code after the switch block (D) Signup and view all the answers

What type of loop in Java guarantees that the loop body will be executed at least once?

do-while loop (B) Signup and view all the answers

Which statement is used to specify many alternative blocks of code to be executed in Java?

'switch' statement (D) Signup and view all the answers

In Java, what does the 'if' statement allow for?

Specifying a block of code to be executed if a condition is true (C) Signup and view all the answers

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Study Notes

Control Flow Statements in Java

Control flow statements are used to control the flow of Java code.
Conditions in Java evaluate to a boolean expression (true or false).

If-Else Statements

The if keyword is used to define an if-else statement in Java.
The else statement is used to specify an alternative block of code to be executed when the condition is false.
The else if statement is used to check for another condition when the initial condition is false.
The purpose of the else statement is to provide an alternative action when the condition is not met.
Nested if-statements allow for multiple conditions to be checked and different actions to be taken.

Loops

A do-while loop guarantees that the loop body will be executed at least once.
The break statement is used to exit a loop or switch statement in Java.

Switch Statements

The switch statement is used to specify many alternative blocks of code to be executed.
The purpose of the switch statement is to execute different blocks of code based on the value of an expression.
When a break statement is encountered within a switch block, the execution of the block is terminated, and the program continues to execute the code after the switch block.

Logical Operators

The || operator represents the logical OR operator in Java.

Code Examples

The code int number = 10; if (number < 0) { System.out.println('The number is negative.'); } checks if the number is negative and prints a message if true.
The code int time = 22; if (time < 10) { System.out.println('Good morning.'); } else if (time < 18) { System.out.println('Good day.'); } else { System.out.println('Good evening.'); } prints a greeting based on the time of day.

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Java Control Statements Quiz

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Questions and Answers

What type of statements are used to control the flow of Java code?

What type of expression do conditions in Java evaluate to?

Which statement is used to exit a loop or switch statement in Java?

Which keyword is used to define an if-else statement in Java?

What type of loop in Java guarantees that the loop body will be executed at least once?

Which of the following represents the equivalent of logical OR operator in Java?

What is the purpose of the else statement in Java?

In Java, when is the else if statement used?

What does the following Java code do? int number = 10; if (number < 0) { System.out.println('The number is negative.'); }

In Java, what does the nested if-statement syntax allow for?

What will be printed when executing the following Java code? int time = 22; if (time < 10) { System.out.println('Good morning.'); } else if (time < 18) { System.out.println('Good day.'); } else { System.out.println('Good evening.'); }

What is the purpose of the switch statement in Java?

What are the conditions under which the else statement in Java will be executed?

In Java, what is the role of the 'else' statement in nested conditional statements?

In Java, what happens when a 'break' statement is encountered within a 'switch' block?

Which type of control flow statement in Java guarantees that the loop body will be executed at least once?

In Java, which statement is used to exit a loop or switch statement?

What type of expression do conditions in Java evaluate to?

What is the role of the 'else' statement in nested conditional statements in Java?

When is the else if statement used in Java?

What keyword is used to define an if-else statement in Java?

What is the purpose of the 'else' statement in Java conditional statements?

In Java, what does the 'else if' statement allow for?

In Java, what is the role of nested if-statements?

What happens in Java when a 'break' statement is encountered within a 'switch' block?

What type of loop in Java guarantees that the loop body will be executed at least once?

Which statement is used to specify many alternative blocks of code to be executed in Java?

In Java, what does the 'if' statement allow for?

Study Notes

Control Flow Statements in Java

If-Else Statements

Loops

Switch Statements

Logical Operators

Code Examples

Studying That Suits You

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