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Right ANSWER is (d) Recursion is MANAGED by JAVA Runtime environment

Explanation: Recursion is always managed by OPERATING SYSTEM.

Correct answer is (b) STACK

To elaborate: Recursions are always MANAGED by USING stack.

The CORRECT ANSWER is (b) Allows one to put all your OPTIONS into a file and pass this file as a parameter

To elaborate: JCOMMANDER SUPPORTS the @syntax, which allows us to put all our options into a file and pass this file as a parameter.

The CORRECT option is (d) @Parameter

To elaborate: @Parameter, @Parameter(names = { “-LOG”, “-verbose” }, description = “Level of verbosity”), etc are VARIOUS forms of USING @Parameter

Correct ANSWER is (b) JCommander

Best EXPLANATION: JCommander is a very SMALL Java framework that MAKES it trivial to PARSE command line parameters.

The CORRECT ANSWER is (a) Arguments TAB

Explanation: Arguments tab is used to pass command line argument in ECLIPSE.

The CORRECT OPTION is (C) String

Easiest EXPLANATION: NONE.

Correct option is (a) main()

To EXPLAIN: Only main() method can be given PARAMETERS VIA using COMMAND line arguments.

The correct choice is (b) SUPER

For EXPLANATION I would say: WHENEVER a subclass needs to REFER to its immediate superclass, it can do so by USE of the keyword super.

Right answer is (c) STATIC method

For explanation I would say: If a static method is present in the PROGRAM then it will be EXECUTED first, then MAIN will be executed.

Correct option is (a) MAIN()

To explain: main() METHOD must be declared STATIC, main() method is called by Java runtime system before any object of any class EXISTS.

Correct CHOICE is (a) final

Easiest explanation: A variable can be declared final, doing so PREVENTS its content from being modified. Final VARIABLES MUST be initialized when it is declared.

The correct CHOICE is (a) VARIABLES declared as FINAL occupy memory

The best I can explain: NONE.

Right choice is (d) when object of CLASS is declared, each object CONTAINS its own copy of static variables

The explanation: All objects of class SHARE same static VARIABLE, when object of a class are declared, all the objects share same copy of static members, no copy of static variables are MADE.

The CORRECT OPTION is (B) object

The EXPLANATION: NONE.

Correct option is (a) 1, 10

The best I can explain: Only one COPY of STATIC variables are created when a CLASS is loaded. Each object instantiated has its own copy of INSTANCE variables.

Right option is (d) default

Explanation: Default is the ACCESS MODIFIER when none is DEFINED explicitly. It means the member (METHOD or VARIABLE) can be accessed within the same package.

The CORRECT choice is (b) False

For explanation: Protected class member (method or variable) is like package-private (default visibility), except that it ALSO can be accessed from subclasses. SINCE there is no such concept as ‘SUBPACKAGE’ or ‘package-inheritance’ in Java, declaring class protected or package-private would be the same thing.

Right option is (c) public, STATIC and FINAL

Easiest explanation: Variables of an interface are public, static and final by default because the interfaces cannot be instantiated, final ENSURES the value assigned cannot be CHANGED with the implementing CLASS and public for it to be accessible by all the implementing classes.

Right CHOICE is (b) Objects of CLASS A can be INSTANTIATED only WITHIN the class where it is declared

To explain I would say: If we make any class constructor PRIVATE, we cannot create the instance of that class from outside the class.

The correct choice is (c) ACCESSIBLE within package and outside the package but through INHERITANCE only

To EXPLAIN I WOULD say: The protected access modifier is accessible within package and outside the package but only through inheritance. The protected access modifier can be USED with data member, method and constructor. It cannot be applied in the class.

Correct ANSWER is (a) PRIVATE

The explanation: The variables should be private and should be accessed with GET and set METHODS.

The correct CHOICE is (a) PRIVATE

Explanation: Private variables are accessible only WITHIN the CLASS.

Correct OPTION is (a) private

The best I can explain: When we pass an argument by call-by-value a copy of argument is made into the FORMAL parameter of the subroutine and CHANGES made on parameters of subroutine have no EFFECT on original argument, they remain the same.

The CORRECT CHOICE is (C) static

For EXPLANATION: NONE.

Correct OPTION is (a) Copy of argument is MADE into the formal PARAMETER of the subroutine

For EXPLANATION: When we pass an argument by call-by-value a copy of argument is made into the formal parameter of the subroutine and changes made on parameters of subroutine have no effect on original argument, they remain the same.

The correct CHOICE is (b) public

Easiest explanation: main() method must be specified public as it called by Java run time system, OUTSIDE of the program. If no ACCESS SPECIFIER is used then by default member is public within its own package & cannot be accessed by Java run time system.

The correct choice is (a) METHOD overloading

For explanation I would say: Two or more methods can have same name as LONG as their parameters declaration is different, the methods are SAID to be overloaded and process is called method overloading. Method overloading is a way by which JAVA implements polymorphism.

Right answer is (a) JVM

The best explanation: MEMORY leak is like holding a strong REFERENCE to an object although it would never be needed anymore. Objects that are reachable but not LIVE are considered memory leaks. VARIOUS tools help us to identify memory leaks.

Right option is (C) The THREAD is PAUSED while garbage COLLECTION runs

Easiest explanation: The thread is paused when garbage collection runs which slows the application performance.

Right option is (C) OutOfMemoryError

To explain: The Xms FLAG has no default VALUE, and Xmx TYPICALLY has a default value of 256MB. A COMMON use for these flags is when you encounter a java.lang.OutOfMemoryError.