java interview questions and riddles

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Java riddles
1.write a java program to print a message without using main function.

  class JavaRid{

             static{

              }
  public static void main(String a[]){

        System.out.println("Java Rid");
   }

}

2.How many main Functions are allowed in Java?

Any number.(with overloading)

3.Unlike c or c++ it can not be forced at any time in java. it will be done implicitly by a lower priority thread to reclaim the memory .

Java Technologies

1.RMI= remote method invocation.

RMI provides the mechanism by which the server and the client communicate and pass information back and forth .information are passed in the form of serialized
objects.

2.JDBC=java data base connectivity. this is used to connect to databases.

3.SWING and AWT

The user interface created by AWT is platform dependent. It resembles the local platform, but swing is platform-independent.

5.Servlets and Applets

Servlets are to servers and applets are to browsers.
Unlike applets servlets have no user interface, it is used to perform operations in server.

J2SE =java 2 software edition .
J2EE =java 2 Enterprise edition ( web development.)
J2ME =java 2 Micro edition