--%>
Assignment Help - homework help

Public class in java

Q. Explain the concept of public classes in java. How they are useful? 

Ans. Public class methods and areas can be accessed from anywhere. But a file with java source code can only contain one public class whose name must also match, with the file name. If it presents, this public class corresponds to the application or the applet in which case the public keyword is essential to allow your web browser or applet viewer to demonstrate the applet.

Use of public classes:  If we want to offer access to these entities and if this access cannot do any harm public class is used.

Example:

Public class square

{    // public class

Public x, y, size;    // public instance variables

}

 

 

   Related Questions in Programming Languages

  • Q : Explain Polymorphism Polymorphism : It

    Polymorphism: It is the ability of an object reference to be employed as if it referred to an object with various forms. The polymorphism in Java outcomes from both class inheritance and interface inheritance. The actually different forms frequently o

    		•
  • Q : Explain Information hiding Information

    Information hiding: The practice of making sure that only as much information is exposed regarding the implementation of a class as is strictly needed. Hiding needless knowledge of implementation makes it not as much of likely that other classes will

    		•
  • Q : State the terms preemption and context

    State the terms preemption and context switching.

    		•
  • Q : Explain Switch statement Switch

    Switch statement: It is a selection statement in which the value of an arithmetic expression {expression!arithmetic} is compared for the match alongside different case labels. When no match is found, the optional default label is chosen For example:

    		•
  • Q : State the term multi threading State

    State the term multi threading.

    		•
  • Q : Define Peer Peer : It is a term

    Peer: It is a term employed of the Abstract Windowing Toolkit (AWT) to refer to the underlying classes which give the platform-specific implementation of the component classes.

    		•
  • Q : System Architecture for Windows

    Tell me about the System Architecture for Windows Programming?

    		•
  • 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

    		•
  • Q : What is Boolean expression Boolean

    Boolean expression: It is an expression whose outcome is of type Boolean, that is, gives a value of either true or false. The operators like && and || take Boolean operands and generate a Boolean outcome. The relational operators obtain operan

    		•
  • Q : Explain Functional programming

    Functional programming: It is a style of programming related with languages like Haskell. The functional programming languages are more strongly tied to a mathematical concept of `function' than imperative programming languages. This makes it simpler

    		•