LANGUAGES | JAVA | JAVA LANGUAGE INTERVIEW QUESTION AND ANSWERS | 02

Java Language Interview - Java Language Interview Question and Answers

Java Language Interview Question and Answers:

6.     What is serialization?
      Serialization is the process of converting a objects into a stream of bytes.

7.     Define strings?
      Strings represent a sequence of characters.The easiest way to represent a sequence of characters in java is by using a character array.

8.     What are different types of access modifiers?     
    Access specifiers are keywords that determine the type of access to the member a class.
    Public
    Protected
    Private
    Default

9.     What is variables and then types?     
    Variables is an identifier that denotes a storage location used to store a data values.unlike constants that remain unchanged during the execution of a program, a variable may takes different values at different times during the execution of the program.
    Instance variables
    Class variables
    Local variable
    Parameters

10.     what is dot operator?
      The dot operator(.) is used to access the instance variables and methods of class objects.It is also used to access classes and sub-packages from a package.
Examples :
Person1.age ---------> Reference to the variable age

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