Java MCQs with answers Page - 16

Here, you will find a collection of MCQ questions on Java. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which of the below is invalid identifier with the main method?

  • (A) public
  • (B) static
  • (C) private
  • (D) final

A

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Q. If an expression contains double, int, float, long, then the whole expression will be promoted into which of these data types?

  • (A) long
  • (B) int
  • (C) double
  • (D) float

A

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Q. Which of these data type can be used for a method having a return statement in it?

  • (A) void
  • (B) int
  • (C) float
  • (D) both int and float

A

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Q. Which of these is the method which is executed first before execution of any other thing takes place in a program?

  • (A) main method
  • (B) finalize method
  • (C) static method
  • (D) private method

A

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Q. Which of these jump statements can skip processing the remainder of the code in its body for a particular iteration?

  • (A) break
  • (B) return
  • (C) exit
  • (D) continue

A

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Q. What is the return type of a method that does not return any value?

  • (A) int
  • (B) float
  • (C) void
  • (D) double

A

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Q. Which keyword is used by the method to refer to the object that invoked it?

  • (A) import
  • (B) catch
  • (C) abstract
  • (D) this

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Q. Which of these method(s) is/are used for writing bytes to an outputstream?

  • (A) put()
  • (B) print() and write()
  • (C) printf()
  • (D) write() and read()

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Q. What is the string contained in s after following lines of code?

Code: 
StringBuffer s new StringBuffer("Hello"); s.deleteCharAt(0);
  • (A) Hell
  • (B) ello
  • (C) Hel
  • (D) llo

A

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Q. Which exception is thrown by read() method?

  • (A) IOException
  • (B) InterruptedException
  • (C) SystemException
  • (D) SystemInputException

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