Java Mcq Questions For Placement Start Creating PDF

MCQ: Abbreviate the term POJO?

1. Plain Old Java Object
2. Performance Old Java Object
3. Performance Optimize Java Object
4. None of the above

MCQ: Struts supports which of these model components?

1. JavaBeans
2. EJB
3. CORBA
4. JDO
5. All Mentioned above

MCQ: Unchecked exceptions are checked at compile-time rather they are checked at runtime.

1. True
2. False

MCQ: Which method returns the interrupted flag after that it sets the flag to false if it is true?

1. isInterrupted()
2. static interrupted()
3. non static interrupted()
4. Both A & C

MCQ: The PipedInputStream and PipedOutputStream classes can be used to read and write data simultaneously.

1. True
2. False

MCQ: From the following statements which is a disadvantage of an java array?

1. An array can hold primitive types data
2. An array has its size that is known as array length
3. An array knows only its type that it contains. Array type is checked at the compile-time
4. An array holds only one type of data

MCQ: Which method when implemented must return true while there are still more elements to extract, and false when all the elements have been enumerated?

1. Object nextElement( )
2. boolean hasMoreElements( )
3. Both A & B
4. None of the above

MCQ: Where are the following four methods commonly used? 1) public void add(Component c) 2) public void setSize(int width,int height) 3) public void setLayout(LayoutManager m) 4) public void setVisible(boolean)

1. Graphics class
2. Component class
3. Both A & B
4. None of the above

MCQ: Implement the Listener interface and overrides its methods is required to perform in event handling.

1. True
2. False

MCQ: Which is the container that doesn't contain title bar and MenuBars but it can have other components like button, textfield etc?

1. Window
2. Frame
3. Panel
4. Container