Lokesh M

 Profile Answers by Lokesh M Questions by Lokesh M

• Feb 10th, 2012

Cloneable interface is a marker interface and has no members. Cloneable is used whenever you want to manipulate a copy of the object without altering the original object. It is used to indicate that...

Answer Question  Select Best Answer

I am new to java...if I passed out the SCJP exams then how it would be beneficial at time of job..interviews???

Anon

• Mar 9th, 2012

Preparing for SCJP helps you to become familiar with the basic concepts and their application in java and also the java syntax. It will be a certificate that will tell your prospective employers that ...

Answer Question  Select Best Answer

What is the exact use of abstract class and interface?

Vinodh Avala

• May 23rd, 2012

Abstract class is like any normal class with the only difference that it cannot be instantiated on its own. Normal class operations like constructor overloading, method overloading etc can be done.An ...

Answer Question  Select Best Answer

Explain polymorphism to your 7 year old nephew.

y.v.padmavathi

• Nov 26th, 2015

The name polymorphism actually specifies some meaning like poly-many and morphus-structure. it is the ability to take more than one form. ex: If we explain the techniques required for drawing then w...

Answer Question  Select Best Answer

How do i write a module to keep count of the amount of guesses it takes to guess the number correctly?

Abhishek Mishra

 Profile Answers by Abhishek Mishra Questions by Abhishek Mishra

• Oct 8th, 2014

"c # This is a guess the number game. import random guessesTaken = 0 print(Hello! What is your name?) myName = input() number = random.randint(1, 20) print(Well, + myName + , I am...

Answer Question  Select Best Answer

class A ______ B ______ C { } // line 4

a) The 1st blank should be extends and the 2nd blank should be implements.

b) The 1st blank should be implements and the 2nd blank should be extends.

c) B is a class and C is an interface

d) B and C can be either class or interface depending upon the placement of extends or implements in the 1st or 2nd blank.

Abhinav Rohatgi

• Mar 30th, 2013

A) is the correct answer because a class firstly extends another class & then implements interface.

Answer Question  Select Best Answer

a) Classes in the same package can access each other.
b) The inherited class should be in the same package as the parent class.
c) Package name a.b implies, package b is inherits from package a.
d) Package access is next to private access in being restrictive.

Amith

• Feb 5th, 2013

I think your first option is true. But any how these things depends on access specifiers. If you are not specifying any access specifier default package level access will be applied to the classes, wh...

Answer Question  Select Best Answer

void f() throws IOException
Which of the following is/are correct overriding method?
a) void f() throws IOException
b) public void f()
c) void f() throws FileNotFoundException
d) void f() throws Exception

imAjit

 Profile Answers by imAjit Questions by imAjit

• Dec 24th, 2012

a) void f() throws ioexception Bcoz the overriding method must NOT throw checked exceptions that are new or broader than those declared by the overridden method. For example, a method that declares a...

Answer Question  Select Best Answer

When we will use thread and runnable in java program ?

happy

• Apr 7th, 2013

Unicast v/s multicast difference in proper format in networking

Answer Question  Select Best Answer

Himu

• Dec 5th, 2014

"java import java.util.Scanner; public class test { public static void main(String[] args) { int f=1; System.out.println("Enter any number. Press 0 to exit...."); ...

Answer Question  Select Best Answer

balakrishnan

• May 27th, 2015

Static keyword is used to access a class information without creation of a new instance(new object) of the class.Good example is main method of java class. Every time when a java program compiles JVM call the main method without creating new instance of that class.

Answer Question  Select Best Answer

I read in the properties of java that it is secured as it is tamper free. I would like to know what is tamper free and how it applies to Java?

dhivya

• Sep 9th, 2016

Actually tamper means any interference to the system which causes damage or any unauthorised access. As in java all are encapsulated inside classes which provides restriction to unauthorised access , which makes the system tamper-proof or tamper-free.

Answer Question  Select Best Answer

Write a Java program without using any library function in string
i/p: My name is Rama
o/p: Rama si eman yM

L?a

• Jan 31st, 2017

Code
span style="color: #0000ff;">"My name is Rama"

Answer Question  Select Best Answer

What is difference between Single Thread and Multiple Thread?
Explain Single Thread Model Vs. Multi thread model. Support your answer with practical example?

Prathiba

• Apr 21st, 2016

A single threaded java program executes in the following manner: Every Java program has at least one thread of control. When a Java program is executed; the execution starts from main() method and sta...

Answer Question  Select Best Answer

Threads block on i/o (that is enters the waiting state) so that other threads may executewhile the i/o Operation is performed.

Read Best Answer

amreenkhader

 Profile Answers by amreenkhader Questions by amreenkhader

• Jan 20th, 2012

Thread gets blocked just because when two thread try to access the single resource simultaneously the threads get blocked and when one thread is using the resource other should be put to sleep state b...

saravanakumar

• Aug 28th, 2005

Sir,   i want one doubt, how to open the new window from click the java frame using handling event. please give the idea to me. i know that it's a comment page. But u have using the doubt page. thanking u.

Improve Answer

The Iterator interface is used to step through the elements of a Collection.

madhu111

• Jul 20th, 2007

Iterator Interface is part of java.util package.It is used to retrive the elements in the collection object one by one.It has methods like hasNext(),next().the iterator interface is obtained by using ...

ramu

• Mar 10th, 2006

Iterator interface is an interface which has these methods.boolean hasNext();Object next();void remove();

Answer Question  Select Best Answer

When a task invokes its yield() method, it returns to the ready state. When a task invokesits sleep() method, it returns to the waiting state.

Sony V George

• Apr 5th, 2007

Yield method is mainly used to release the lock of resource and pull up in to steady state from wait pool. Sleep() will pull the thread to sleep for the given time. It will throws exception while trying to intrupt in b/w the sleep state

sunil

• Oct 6th, 2005

Yield() releases lock on resources to be used by other threads, whereassleep() doesn't release lock & it will throws error it interrupted thread in sleep state.

Answer Question  Select Best Answer

A native method is a method that is implemented in a language other than Java.

oam

• Aug 11th, 2007

Informs the compiler that the method has been used in a non-java platform and used only with the methods.

ramu

• Mar 10th, 2006

     native?         Can be applied to methods only. (static methods also)?         Written in a non...

Answer Question  Select Best Answer

If an expression involving the Boolean & operator is evaluated, both operands areevaluated. Then the & operator is applied to the operand. When an expression involvingthe && operator is evaluated, the first operand is evaluated. If the first operand returns avalue of true then the second operand is evaluated. The && operator is then applied tothe first and second operands. If the first operand evaluates...

sivanesh.a

 Profile Answers by sivanesh.a Questions by sivanesh.a

• Dec 24th, 2006

& -> for bitwise operation&&-> for logical comparison

Tracy Nelson

• Sep 7th, 2005

There is no such thing as a "Boolean &" operator. The & operator is the bitwise-AND operator, and combines two values. It's often used for masking off part of a variable (e.g., to get the two low-order bytes of a 32-bit value, use the expression "value & 0xFFFF").

Answer Question  Select Best Answer

The purpose of the Runtime class is to provide access to the Java runtime system.

jimmy514in

 Profile Answers by jimmy514in Questions by jimmy514in

• Jul 5th, 2010

I think we can use the runtime to get the properties of the class and also to  load a specific .exe file from a particular location.Please let  me know if I am mistaken. Thank you.

Suresh

• Mar 30th, 2006

Which returns the runtime information like memory availablilityRuntime.freeMemory() --> Returns JVM Free MemoryRuntime.maxMemory() --> Returns the maximum amount of memory that the JVM will attempt to use.also helps to run the garbage collectorRuntime.gc()

Answer Question  Select Best Answer