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Java - How to convert string to charArray ?
String str="Welcome To GeekInterview.com"
How can convert the above string to charArray without using any buit-in function in java?
Anyone to know the answer.please help me? i am new to learn java.Without main Method
How can we use method without using main method in JAVA?
What is the difference between preemptive scheduling and time slicing
Under preemptive scheduling, the highest priority task executes until it enters the waitingor dead states or a higher priority task comes into existence. Under time slicing, a taskexecutes for a predefined slice of time and then reenters the pool of ready tasks. Thescheduler then determines which task should execute next, based on priority andother factors.
What is the purpose of the finally clause of a try-catch-finally statement
The finally clause is used to provide the capability to execute code no matter whether ornot an exception is thrown or caught.
What must a class do to implement an interface
It must provide all of the methods in the interface and identify the interface in itsimplements clause.
salembalan
- Feb 15th, 2008
Interface enhance the concepts of inheritence. by calling multiple interfaces to class we can also inherinting more than a class indirectly
Mithun Challa
- Jan 6th, 2008
A class (someName) which wants to use features of the interface(someInterfaceName) must use implements keyword like class someName implements someInterfaceNameIt must define all the methods in t...
What happens if a try-catch-finally statement does not have a catch clause to handlean exception that is thrown within the body of the try statement
The exception propagates up to the next higher level try-catch statement (if any) orresults in the program's termination.
What is final variable
Rajesh
- Nov 1st, 2005
Final variable are constants. Once u assigned some value to the final variable,that assigned value througout the ppm is same.u canot modify it.final class cant be inherited.
What is the difference between Vector, Array and Arraylist
snehakesri
- Mar 20th, 2009
One more point :Vector defaults to doubling the size of its array, while the ArrayList increases its array size by 50 percent.
Sundeep sharma
- Oct 10th, 2006
In Java, arrays are objects. Arrays can be of primitive data types or reference types.
What is the difference between String and StringBuffer
Rajesh
- Nov 2nd, 2005
String is the immutable we canot modify the string object, whereas StringBuffer is mutable,we can modify the stringobject.perfomance of string is more than the string buffer at runtime.By Rajesh
What is the difference between HashTable and HashMap?
bhushanamca
- Oct 3rd, 2009
Hashtable does not allow null values or null keys, whereas hash map allows null keys and null values. Hashtable is synchronzied whareas hashmap is not synchronized. In case of single thread using hashmap is faster than the hashtable. In case of multiple thereads, using hashtable is advisable.
Class A{Public void meth(){}}class B extends A{ Public void meth(){ } public static void main(String args[]){ A a=new A(); a.meth();//which method will this call } }if u want to call a method of class B then how can u achieve this?
sekhar511
- Dec 10th, 2010
This problem is known as "ambiguity problem"We can overcome this by using Interfaces.
bhuvanamsk
- Nov 23rd, 2010
To access a method of derived class create object for class B. B b=new B(); b.meth(); If we access class A 's method meth() will not be called.Subclass B overrides super class. to ac...
What is TLD?
harris
- Dec 1st, 2011
! TLD is Top level domain, and usually the cheapest domain are dot info
leons0133
- Feb 12th, 2011
TLD is Top level domain. It is located in the right hand part of the domain name. The commonly used TLD are .com, .net, and .org. The .biz, .info and .ws are also used.
What is meant by inheritance ? Explain with an example
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
- 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...
Difference between Applet and JApplet
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
- 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
Why is transient modifier used and where in real life?
Many people disturbed me about the solution,some one help me.
anandkumarjha
- Oct 3rd, 2010
Volatile modifier is being used in the field of multithreading because whenever all the threads access to a single variable ,they have their seperate copy of that variable and if they modifies the var...
Raja Chaithanya Bangaru
- Nov 11th, 2005
In Java, all objects are not serializable.In distibuted environment,an object needs to be serializable.(serialization means writing the state of an object to a file using output stream so that it pers...
Can we declare final variables in side a method.
Mahesh
- Aug 2nd, 2006
Yes, it is possible to declare a final variable inside a method but it is not recommended.
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