--%>

Explain Upcast

Upcast: It is a cast towards an object's ultimate super type - which is, `up' the inheritance hierarchy towards the Object class, for example:

        // Upcast from VariableController to HeaterController
        VariableController v;
        ...
        HeaterController c = v;

   Related Questions in Programming Languages

  • Q : What is Search path Search path : It is

    Search path: It is a list of folders (that is, directories) to be searched - for a program or class, for example.

  • Q : Problem on COBOL if sentence Write a

    Write a COBOL IF sentence to use the values of numeric variables EXAM and COURSEWORK, both assumed to be with format PIC 999 and in the range 0 to 100 and to move the value:“FAIL”, “RC” ( resit coursework), “RE” (r

  • Q : Define the term Multiprogramming system

    Define the term Multiprogramming system: It is an operating system which is able to run multiple programs parallel.

  • Q : Define Unicode Unicode : It is a 16-bit

    Unicode: It is a 16-bit character set designed to make it simpler to exchange and exhibit information which makes use of a broad range of dissimilar languages and symbols.

  • Q : Define Container Abstractions Container

    Container Abstractions: Abstractions for containers (such as lists, stacks, sets, or queues) may represent just the state of a container—e.g., full or empty—and abstract away from the actual container content. The list operations also need

  • 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 : Explain Recursion Recursion : Recursion

    Recursion: Recursion outcomes from a method being invoked whenever an existing call to the similar method has not yet returned. For example:     public static void countDown(int n){  

  • Q : Define the term Module Module : It is a

    Module: It is a group of program components, usually with restricted visibility to program components in other modules. Java employs packages to implement this perception.

  • Q : Explain the way to close an XHTML

    Explain the way to close an XHTML element.

  • Q : CSS and CSS3 State some of the

    State some of the difference between the CSS and the CSS3.