Quiz for Java Basics

Q1: Which data type is used to create a variable that should store text?

A. string B. String C. Text D. char

Q2: Which keyword is used to declare a variable in Java?

A. dim B. define C. var D. int

Q3: Which data type is used to store a single character?

A. String B. char C. character D. text

Q4: What is the default value of an int variable in Java?

A. 0 B. null C. undefined D. -1

Q5: Which of the following is a floating-point data type?

A. int B. char C. float D. boolean

Q6: Which operator is used for addition in Java?

A. + B. * C. / D. -

Q7: Which operator is used for logical AND?

A. & B. && C. | D. ||

Q8: What is the result of 10 % 3 in Java?

A. 1 B. 0 C. 3 D. 10

Q9: Which of the following is a relational operator?

A. = B. ! C. == D. &

Q10: Which operator is used to increase a variable’s value by one?

A. + B. += C. ++ D. inc

Q11: Which keyword is used to create a conditional statement in Java?

A. if B. while C. loop D. switch

Q12: Which loop runs at least once before checking the condition?

A. for B. while C. do-while D. switch

Q13: What is the purpose of the 'break' statement?

A. Exits the loop B. Skips current iteration C. Stops compilation D. Pauses execution

Q14: Which keyword is used for multiple conditional branches?

A. if B. while C. switch D. for

Q15: Which loop is best when the number of iterations is known?

A. while B. do-while C. for D. switch