A) It enables you to access instance variables of any objects within a classB) It enables you to store values in instance variables of an objectC) It is used to call object methodsD) It is to create a new object

Saurabh kumar gupta

• Feb 4th, 2018

It enables you to access instance variables of any objects within a class

Lakhvir chahal

• Dec 15th, 2017

It is used to call object method

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I have a question in Java-string,
String s="adf5hgjyu1frdsff6vgyu7bnjh9asd3"; like
How to print only numbers in that string

Vincent

• Jan 11th, 2018

Run someCode() method from main()

Code
span style="color: #0000ff;">"adf5hgjyu1frdsff6vgyu7bnjh9asd3""the number is "+n+" and it is ""Prime""Not Prime""Prime";
        }

rawatfeb

 Profile Answers by rawatfeb Questions by rawatfeb

• Feb 23rd, 2016

private static void NumericsFromStringTest() { String alphaNumericString = "h8ll0"; char[] carray = alphaNumericString.toCharArray(); for (char c : carray) { if (Character.isDigit(c)...

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You can do it without using key event, by creating an artificial key event using java.awt.Robot class to generate a "simple caracter" key press (for instance KeyEvent.VK_A). Sample Source Code -- May not be accurate but the concept is as follows. import java.awt.*;import java.awt.event.*;public class Test {      public static void main(String[] args) throws AWTException...

hobocat

• Dec 20th, 2017

There is same bug: when I changed the capslock's statusthe check result change nothing. "java public static void main(String[] args) throws InterruptedException { whil...

Tim Rousselet

 Profile Answers by Tim Rousselet Questions by Tim Rousselet

• May 23rd, 2011

You probably need to add !ev.isShiftDown() here if(Character.isUpperCase( ev.getKeyChar())) to check if CapsLock is really on.

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Vishal

• Jan 2nd, 2018

When we are working with multiple threads, we have to make sure multiple threads are working on synchronized object otherwise different threads might see different values for same variables. In order...

sandychops

 Profile Answers by sandychops Questions by sandychops

• Feb 24th, 2015

Lock is a thread synchronization mechanism similar to synchronized blocks. From Java 5 the package java.util.concurrent.locks contains several lock implementations which we can use to achieve synchron...

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A) One B) Two C) ThreeD) Four Explanation: There are 3 types of comments namely Single-line, Multi-line and Documentation comment

A P Chavan

• Dec 4th, 2017

Three types of comments : Comment type | Used as 1. Single-line // Info :=>The compiler ignores everything from // to...

Ernie B

• Sep 27th, 2017

I would answer 2 depending on what you mean by "type of Comments..". This question can potentially be answered as follows:

Documentation Comment
* uses multi-line style

Implementation Comment
* uses traditional style (end of line or single line)

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Difference between CompareTo and equals method.

siva

• Oct 21st, 2017

equals() method is derived from Object class which is a super class in java indirectly and this method is used to verify the content of the two objects if same return true otherwise return false. In ...

Bharat

• Oct 1st, 2012

CompareTo method which is present in the String class is used to check the two strings. It checks each character with the other String and if found equals then returns 0. Else negative value or positi...

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preety Verma

• Oct 21st, 2017

There are two types of exceptions in Java
1.Checked
2.Unchecked

Kumaravel

• Jun 16th, 2016

Two type of exception
Checked Exception -> Compile time exception
Unchecked Exception -> Run time exception

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After a thread is started, via its start() method or that of the Thread class, the JVMinvokes the thread's run() method when the thread is initially executed.

RV

• Oct 7th, 2017

If we havent define run() method within child Class... and we call start() mathod throght child object...
and o/p will be Blank screen

subashrivasudevan

 Profile Answers by subashrivasudevan Questions by subashrivasudevan

• Nov 22nd, 2008

Start method invokes it.It may or may not get executed immediately.

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Akshat Rathore

• Oct 7th, 2017

ArrayList :
New Capacity : Current Capacity * 3/2 + 1

Akshat

• Oct 7th, 2017

Initial capacity of Vector is 10. If we add 11th element it will increase to 20 and if we insert 21th element capacity will increase to 40. Hence New Capacity = Current Capacity * 2

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Shahnoor Alam

• Aug 28th, 2017

Inheritance is an OOPS concept by which a class can acquire the characteristics of another class. The class that does the inheriting is called a subclass. Therefore, a subclass is a specialized version of a superclass.

amrutabhavana

 Profile Answers by amrutabhavana Questions by amrutabhavana

• Sep 4th, 2011

Inheritance is acquiring properties of one class from another class, the class which is inherited is called base class and the class which acquir the properties is called derived class. eg: {geshibot...

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Uday

• Aug 24th, 2017

In Software developement, we provide solutions to real life problems of people, but real life is not procedural in real life there are objects dealing with objects and object ahve some basic characteristics hence arised object oriented approach.

Anand Sami

• Oct 8th, 2016

Everything is an objects, so we are using the Oops concepts

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A) EncapsulationB) ClassC) InheritenceD) Polymorphism

jagmeet

• Aug 10th, 2017

Encapsulation

dhivya

• Jun 9th, 2016

Encapsulation

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A dead thread cannot be restarted.

Swapnil Srivastav

• Jul 10th, 2017

It can be started if you program it in that way.
Use ThreadPoolExecutor.

Trimoorthy

• May 23rd, 2006

You can start a dead thread. The dead thred is just an object but can not be instantiated

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Lucky

• Jun 5th, 2017

Run Time Polymerphismis achieving which object method should invoked during runtime instead of compile time and when you call a method using that pointer the corresponding derived class method is called instead of base class method.

parul agarwal

• Jul 31st, 2011

Polymorphism is the capability of an action or method to do different things based on the object that it is acting upon. In other words, polymorphism allows you define one interface and have multiple ...

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An interface may be declared as public or abstract.

Aarti Suryawanshi

• May 20th, 2017

Public or abstract and from JDK 1.8, you may have default and static methods in an Interface.

sujatham

 Profile Answers by sujatham Questions by sujatham

• Aug 2nd, 2007

Public  or abstract.

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RAAJKUMAR.S

• May 18th, 2017

This is the code for binary tree in java"java public class bTree { bnode root=null; void add(int val){ bnode newnode= new bnode(val); bnode curr = this.root; bno...

John

• Mar 15th, 2005

This article introduces the basic concepts of binary trees, and then works through a series of practice problems with solution code in C/C++ and Java. Binary trees have an elegant recursive pointer st...

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jyoti

• Apr 16th, 2017

Download Java Plugin for web browser. In Java SDK 1.3 onwards a plugin is automatically installed with web browser for supporting Swing components.

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Praneeth Valeti

• Apr 16th, 2017

Japplet provides to use Swings components on an applet.
Applets provides to use AWT components on it for GUI(Graphical User Interface).

cool_toad2001

 Profile Answers by cool_toad2001 Questions by cool_toad2001

• Mar 25th, 2009

1. JApplet extends Applet 2. Japplet suppurt various pane such as content pane, glass pane,root pane for good look n fillnot supported by applet 3. to add component to applet we call add() of applet where as to add compenent in Japplet we call add() of content pane

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The java.awt.AWTEvent class is the highest-level class in the AWT event-classhierarchy.

qanda

• Mar 9th, 2017

Why java.awt.AWTEvent class is it at highest-level?

Sumathi

• Oct 6th, 2011

The java.awt.AWTEvent class is the highest-level class in the AWT event-class hierarchy.

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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"

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