--%>
Assignment Help - homework help

Explain Variable declaration

Variable declaration: It is the association of a variable with a specific type. It is significant to make a distinction among the declaration of variables of primitive types and such of class types. The variable of primitive type performs as a container for the single value of its declared type. The declaration of variable of a class type doesn’t automatically causes an object of that type to be constructed and, by default, the variable will encompass the value null. The variable of a class type performs as a holder for a reference to an object which is compatible with the variable's class type. The Java's rules of polymorphism permit a variable of a class type to hold a reference to some object of its declared type or any of its sub-types. The variable with a declared type of Object, thus, might hold a reference to an object of any class, consequently.

   Related Questions in Programming Languages

  • Q : What is Static initializer Static

    Static initializer: An initializer prefixed with ‘static’ reserved word. The static initializer is stated outside the methods of its enclosing class, and might access only the static fields and methods of its enclosing class.

    		•
  • Q : Define Scope Scope : A language's scope

    Scope: A language's scope rules establish how broadly variables, methods and classes are visible in a class or program. The local variables contain a scope restricted to the block in which they are stated, for example. Private methods and variables co

    		•
  • Q : What is Application programming

    Application programming interface (API): It is a set of definitions that you can make use of it in writing programs. In the perspective of Java, these are the classes, packages, and interfaces which can be utilized to build complex ap

    		•
  • Q : What is Complement operator Complement

    Complement operator: The complement operator, ~, is employed to invert the value of each bit in the binary pattern. For illustration, the complement of 1010010 is 0101101.

    		•
  • Q : Define Application Application : It is

    Application: It is frequently used, simply as a synonym for the program. Though, in Java, the word is particularly employed of programs with a Graphical User Interface (GUI) which are not applets.

    		•
  • Q : Types of rings in CPU Name the

    Name the different kinds of rings presented in CPU?

    		•
  • Q : Explain Semantic error Semantic error:

    Semantic error: It is an error in the meaning of program. A statement might contain no syntax errors, however might still break the rules of Java language. For example, when ivar is an int variable, the shown statement is syntactically correct

  • Q : What is Hostname What is Hostname : It

    What is Hostname: It is the name of a host system.

    		•
  • Q : What are Literals What are Literals and

    What are Literals and also state their respective types?

    		•
  • Q : Explain If-else statement If-else

    If-else statement: It is a control structure employed to select between performing one of two alternative events.     if(boolean-expression){        // Statem

    		•