Quiz for throw vs throws

Q1: What does the 'throw' keyword do in Java?

A. Catches an exception B. Declares an exception C. Creates a new method D. Manually throws an exception

Q2: Which keyword is used in a method signature to declare an exception?

A. throw B. throws C. catch D. try

Q3: Which of the following is the correct syntax for 'throw'?

A. throw Exception; B. throw new Exception(); C. throws new Exception(); D. catch new Exception();

Q4: What is the return type of the 'throw' keyword?

A. void B. Exception C. It has no return type D. Object

Q5: Can 'throws' be used to handle RuntimeExceptions?

A. Yes B. No C. Only in try block D. Only with final keyword

Q6: Which exception type must be declared or handled in Java?

A. RuntimeException B. Error C. Checked Exception D. NullPointerException

Q7: Which statement about 'throw' is true?

A. It can throw multiple exceptions B. It must throw an instance of Throwable C. It is used only in constructors D. It automatically catches the exception

Q8: Where is 'throws' used in Java code?

A. Inside the method body B. In a loop C. In the method declaration D. Inside try block

Q9: Which is a valid method declaration using 'throws'?

A. public void read() throw IOException B. public void read() throws IOException C. public throws void read() D. throws public void read()

Q10: Can you throw more than one exception using a single 'throw' statement?

A. Yes B. No C. Only in catch block D. Only with 'throws'

Q11: Which of the following is a checked exception?

A. NullPointerException B. IOException C. ArithmeticException D. ArrayIndexOutOfBoundsException

Q12: What happens if a checked exception is not declared using 'throws'?

A. Compilation error B. Runtime warning C. Ignored by JVM D. Converted to unchecked