--%>
Assignment Help - homework help

Explain Global variable

Global variable: It is a phenomenon which is more generally regarded as being a trouble in structured programming languages than in object-oriented languages. In structured programming language, like C or Pascal, a global variable is one stated outside the procedures and functions of a program. This is hard to keep track of the usage of this variable as it is readable and writable by the entire program or module in which it is stated. This makes these variables a general source of logical errors. However, instance variables pose a similar trouble within class definitions, as Java's scope rules make them available to all methods stated within a class. This is one of the reasons why we favor to channel access to instance variables via accessor and mutator techniques even in a class.

   Related Questions in Programming Languages

  • Q : Explain different cursors types in ADO

    What are the different cursors types in ADO and illustrated them?

    		•
  • Q : What is Hash function Hash function : A

    Hash function: A function employed to generate a hash code from the random contents of an object. The classes can override the hash Value method, inherited from the Object class, to state their own hash function.

    		•
  • Q : What is Class header Class header : It

    Class header: It is a header of class definition. The header provides a name to the class and states its access. It too explains whether the class expands a super class or implements any interfaces.

    		•
  • Q : Define Case sensitive Case sensitive :

    Case sensitive: The test which is sensitive to whether a character is in upper-case (example, 'A') or lower-case (example, 'a').

    		•
  • Q : BAT files and shell scripts Using the

    Using the Web as a resource for your investigation, find out and explain what BAT files and shell scripts contain, and what they are used for. In the light of your findings, discuss why an operating system would provide both a graphical user interface

    		•
  • Q : Explain Java PathFinder Java

    Java PathFinder: Java PathFinder (JPF) is a model checker that has been developed as a verification and testing environment for Java programs (Figure shown below). It is available as open source at SourceForge.net (JPF website). It consists of a custo

    		•
  • Q : Procedural and object-oriented programs

    Illustrate the difference between the procedural and object-oriented programs in brief.

    		•
  • Q : What is an Iterator pattern Iterator

    Iterator pattern: It is a common pattern in which the contents of a collection are iterated above in order. The Iterator pattern frees a client of data from requiring details of how the data is stored. This pattern is maintained by the Iterator and Li

    		•
  • Q : Define the term Catching exceptions

    Catching exceptions: Exceptions are caught in the catch clause of the try statement. Catching an exception provides the program a chance to recover from the trouble or attempt a repair for whatsoever caused it.

    		•
  • Q : Difference between the choice and list

    Illustrate the difference between the choice and list?

    		•