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.


Public class square

{    // public class

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




   Related Questions in Programming Languages

  • Q : Questions on java class Array 1.

    1. Suppose we have a class A which has a constructor that takes a single integer. (a) After the following statements have been executed, how many A objects will exist

  • Q : Explain Singleton pattern Singleton

    Singleton pattern: It is a pattern which permits us to make sure that only a single instance of a specific class exists at any one time. Such an instance is termed as singleton. The pattern can as well be employed whenever instances would have no excl

  • Q : Aren't HTML Aren't HTML, SGML, and XML

    Aren't HTML, SGML, and XML all very similar things?

  • Q : What is Pattern Pattern : It is a

    Pattern: It is a recurring theme in class usage or design. Interfaces like Iterator encapsulate a pattern of admission to the items in a collection, whereas freeing the client from the requirement to know details of the way in which the collection is

  • Q : XPATH selector Normal 0 false false

    Normal 0 false false

  • Q : Define Main method Main method : It is

    Main method: It is the beginning point for program execution public static void main(String[] args)

  • Q : Define Daemon thread Daemon thread :

    Daemon thread: The daemon threads are non-user threads. They are usually employed to carry out low-priority tasks which must not take priority over the major task of the program. They can be employed to do helpful work whenever all other user threads

  • Q : What is MIME MIME : Multipurpose

    MIME: Multipurpose Internet Mail Extensions (abbreviated as MIME) are rules which make it possible to utilize electronic mail to send content other than the simple text.

  • 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 : Types of layout managers Describe the

    Describe the layout manager and what are the various types of layout managers accessible?

©TutorsGlobe All rights reserved 2022-2023.