--%>
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 : Monte Carol method to estimate pi An

    An interesting way to estimate pi can can done using Monte Carol method with minimal mathematics. Monte Carlo is known for its casinos. A Monte Carlo method uses change, or in our case, random numbers to simulate the real situation. The situation we simulate here is t

    		•
  • Q : Define Property Specifications Property

    Property Specifications: Users can specify assertions using the assert(expr) statements. An assert statement is used to check if the property specified by the expression expr is valid within a state. If expr evaluates to 0, this implies that it is not

    		•
  • Q : How XML web services integrate two

    How can XML web services integrate two legacy distributed systems, one based on Corba and one based on Java RMI?

    		•
  • Q : Define Java 2 SDK Java 2 SDK : It is a

    Java 2 SDK: It is a particular implementation of the abstract functionality explained in Sun's specification of Java 2 Platform.

    		•
  • Q : State Finalization Finalization :

    Finalization: Instantly before an object is garbage collected, its finalize method is called. This offers it the opportunity to free any resources it may be holding on to.

    		•
  • Q : Transaction processing monitor or TP

    What is a transaction processing (TP) monitor?

    		•
  • Q : Define Fetch-execute cycle

    Fetch-execute cycle: The simple set of steps which are endlessly recurring by a computer's Central Processing Unit for each and every program instruction: `Fetch the next instruction suggested by the program counter,' `update the program counter to pa

    		•
  • Q : What is SLAM SLAM is a Microsoft

    SLAM is a Microsoft project that blurs the line between static analysis and model checking and deductive reasoning. The main goal of SLAM is to check temporal safety properties of C programs (it actually checks that a program correctly uses the interf

    		•
  • Q : What is Abstract method Abstract method

    Abstract method: This is a method with the abstract reserved word in its header. The abstract method has no method body. Methods stated in an interface are for all time abstract. The body of an abstract method should be stated in a su

    		•
  • Q : Explain Sign extension Sign extension :

    Sign extension: Whenever an integer value from a type with a specific range is stored in a variable with a larger range, Java employs sign extension to determine the resultant value. The most important bit in the original value is employed to fill the

    		•