Practice Questions

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

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

Which loop guarantees at least one execution?

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

What will happen if an array index is out of bounds?

A. Compile-time error B. Runtime exception C. Logical error D. No error

Which keyword is used to prevent method overriding?

A. static B. final C. private D. protected

Which class is used for dynamic arrays in Java?

A. Array B. List C. ArrayList D. Collection