QUESTION: What is the range of the char type?
ANSWER: The range of the char type is 0 to 2^16 - 1.
QUESTION: What is the purpose of finalization?
ANSWER: The purpose of finalization is to give an unreachable object the opportunity to perform any cleanup processing before the object is garbage collected.
QUESTION: What is the difference between the Boolean & operator and the && operator?
ANSWER: If an expression involving the Boolean & operator is evaluated, both operands are evaluated. Then the & operator is applied to the operand. When an expression involving the && operator is evaluated, the first operand is evaluated. If the first operand returns a value of true then the second operand is evaluated. The && operator is then applied to the first and second operands. If the first operand evaluates to false, the evaluation of the second operand is skipped.
QUESTION: How many times may an object's finalize() method be invoked by the garbage collector?
ANSWER: An object's finalize() method may only be invoked once by the garbage collector.
QUESTION: What is the purpose of the finally clause of a try-catch-finally statement?
ANSWER: The finally clause is used to provide the capability to execute code no matter whether or not an exception is thrown or caught.
QUESTION: What is the argument type of a program's main() method?
ANSWER: A program's main() method takes an argument of the String[] type.
QUESTION: Which Java operator is right associative?
ANSWER: The = operator is right associative.
QUESTION: Can a double value be cast to a byte?
ANSWER: Yes, a double value can be cast to a byte.
QUESTION: What is the difference between a break statement and a continue statement?
ANSWER: A break statement results in the termination of the statement to which it applies (switch, for, do, or while). A continue statement is used to end the current loop iteration and return control to the loop statement.
QUESTION: What must a class do to implement an interface?
ANSWER: It must provide all of the methods in the interface and identify the interface in its implements clause.
