Q1 . who founded Java?

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SOLUTION

James Gosling founded java.

Q2 . What is a JDK?

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SOLUTION

It is a Java environment for developing various java applications.JDK consists of

>JRE(java resource environment)

>Java compiler and interpreter and other components.

Q3 . what is a JVM?

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SOLUTION

it stands for Java Virtual Machine.It is used to generate the Java Byte code for the program.

Q4 . why is Java Platform neutral?

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SOLUTION

Java uses a JVM to generate Java Byte code that can used in any platform provided a JVM is present in the environment.

Q5 . what is the differnce between Java and C++?

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SOLUTION

Java is platform independent where as C++ is platform dependent.

Java does not support operator overloading where as C ++ does

Java does not support structures or unions ;C++ does

Q6 . what is the use of abstract keyword?

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SOLUTION

The abstract key word can be used for classes as well as methods.The following occurs

>An abstract class cannot have objects

>An abstract function or method cannot have a definition like abstract void func(){}

Q7 . what is garbage collection?

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SOLUTION

Garbage collection is used to get rid of memory management issues by removing the unused artifacts and reclaiming the memory for reuse by the program.

Q8 . what are destructors?

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SOLUTION

Destructor are member functions that are used to release the resources that have be allocated during the instanciation of an object.

Q9 . what are packages?

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SOLUTION

Packages are groups of classes and interface encapulated together so that they can be reused.Packages can be of two types

>user defined

>system packages or built in packages.

Q10 . what are IDEs for Java?

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SOLUTION

IDE s stand for Integerated development Environment.some widely used IDEs are

>Eclipse

>Netbeans etc

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