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java programming questions and answers

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 java coding test questions and answers



Java Objective Type Q&A

Object type Q&A


    1. The first version of Java was actually named Oak 

    2. A single line statement in Java ends with semicolon

    3. The execution of Java application begin at main method

4. Features of java is called as Java Buzzwords 

oops concept & key word part

  1. object are combination of code and data that are treated as a single unit

  2. In objects, the behavior of the real-world entities is represented by method 

  3. In objects, data members/data elements define the state of an object

  4. Class is a model or blue -print from which an object is created.

  5. Binding the data to methods of an object is called encapsulation

  6. Polymorphism provides the mechanism of ‘one name but different implementations’

  7. A class method is used to assign values to private instance variables of a class

  8. Inheritance enable software reusability which saves time in development encourages using previously proven and quality software components

  9. A method call resolved at   compile-time is referred to as early binding and a method call resolved at run-time is called late binding 

  10. In a class global variables are declared using the keyword static

  11. The word integer is not a java keyword  

  12. If class A inherits class B, class A is called derived class and class B is called base class

  13. number ,Number ,sum _$, averages are legal identifier
  14. 44sum ,all/clear ,end-to-end are illegal identifier



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