An object's finalize() method may only be invoked once by the garbage collector.

Subhash

• Jul 31st, 2007

What if in the finalize method I make the object reachable.<code>class a{        b b1=null;        ..}class b{ &nb...

Tharani devi

• Oct 8th, 2005

Finalize method of an object is executed only once.

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Yes, a double value can be cast to a byte.

swags12

 Profile Answers by swags12 Questions by swags12

• Nov 2nd, 2009

Yes a double value can be cast to bytefor eg:   b=bytedouble d=conversion b=(byte) d:output  will be 329.142

Muthu

• Aug 2nd, 2007

Hi could you please explain how can a double valuebe able to convert in to byte since the memory value of double(16 byte) is greater than a byte.

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Z or x

james.vinett

 Profile Answers by james.vinett Questions by james.vinett

• Aug 23rd, 2009

The ternary operator is written as:x ? y : zand reads:if( x ) then y else the result is returned and may be assigned.ex:int result = (2

rajanikanth

• Sep 15th, 2005

 It is written x ? y : z. 

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A local inner class may be final or abstract.

sujatham

 Profile Answers by sujatham Questions by sujatham

• Jul 29th, 2007

A local inner class may be declared as abstract or final.But not both at the same time.

shivakumar

• Oct 14th, 2005

Static ,final and abstract

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Try statements may be tested.

vtheivamani

 Profile Answers by vtheivamani Questions by vtheivamani

• Jan 11th, 2007

ya ....try statement may also nested...see that below example.....otherwise go through the following linkshttp://www.ccs.neu.edu/course/com3118/EXCEPTION.htmlhttp://www.javacamp.org/javavscsharp/tryca...

Dhananjay Singh

• Sep 12th, 2005

The try statement can never be nested.

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When an exception is thrown within the body of a try statement, the catch clauses of thetry statement are examined in the order in which they appear. The first catch clause that iscapable of handling the exception is executed. The remaining catch clauses are ignored.

RKalaa

 Profile Answers by RKalaa Questions by RKalaa

• Apr 26th, 2007

If you are trying to catch the specific exception  ,  write that catch clause prior to the other / general clauses.Otherwise the compilation error "The Exception already been caugh...

prabhakar

 Profile Answers by prabhakar Questions by prabhakar

• Feb 28th, 2006

now once the exception is  thrown the jvm searches for the catch blocks from the most specific type to the general one in order i.e from the subclasse then to the super class for all exception.so...

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CalBear

 Profile Answers by CalBear Questions by CalBear

• Jun 2nd, 2008

Method declared as final cannot be overridden but CAN be inherited. Example: The isAlive() method in Thread class is marked final but any subclass of class Thread inherits that method i.e. method isAlive() can be invoked on an instance of the subclass.

mahendra

• Jul 5th, 2005

Method declared as final as 2 uses. 1.method declared as final cannot be overridden. 2.method declared as final cannot be inherited.

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Gags

• Aug 16th, 2005

An inner class is a type of nested class that is not explicitly or implicitly declared static.  Types of Inner Classes: Local inner class. Anonymous inner class. Non-static member class. Member Inner class.

Shaiki mohamed

• Aug 3rd, 2005

Static class encloses with in the another static class is called nested class .  If the non-class encloses with the non-static class is called the inner class.   b shaik mohamed

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jimmy514in

 Profile Answers by jimmy514in Questions by jimmy514in

• May 17th, 2010

Static class creates just one copy in JVM.Static class can be used like a singleton class.Static class is used when you need just one copy in the system.Esp. when there are security applications associated with it.

ilovejava

• Jul 31st, 2005

By using static inner classes, you can add additional support functionality to your systems for capabilities such as testing, while incurring no penalties in normal, production deployment

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Ganesh MN

 Profile Answers by Ganesh MN Questions by Ganesh MN

• Jan 6th, 2011

Garbage Collection is the automatic memory management system  by which JVM discards unreachable objects(objects which are not being referrenced by any reference varible).

Ritesh

• Jul 25th, 2005

Java provide a automatic clean up of object if that object referecne counter becomes zero. and this is done by the garbage collector. this will invoke automatically and free all those resources(object) who is not been use for a long time..

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Answered by Scott on 2005-05-12 09:44:53: Overloading: The same method name with a different signature (generally input argument list) written in the same class.  Overriding: The identical method signature from a parent (super) class written in a subclass and modification of the method body occurs.

M.Rajarajeswari

• Nov 26th, 2005

Overloading:Methods or functions  having same method or function name but have different no. of arguements or different types of arguements. Overriding: Method or functions having same method r function name,type and no. of arguments are also same.

Rajesh Sakhamuri

• Nov 3rd, 2005

OVERLOADING:passing the same metohd name with different arguments,this can be written with in the class.EX:Static binding.OVERRIDDING:passing same method name,with the same signatures in the child class also.this is relation with the parent & child class.EX:Dynamic binding.By Rajesh

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Madhavan Elango

• Jul 5th, 2005

There are three differences:  - access to Hashtable is synchronized whereas access ro hashMap is not. - HashMap allows null values as keys and values whreas Hashtable is not -Hashtable is one of the original collections of Java but HashMap is added with Java 2, v1.2 

ashok

• Jun 29th, 2005

Hashmap can contains null values as the keys and as well as values.But Hashtable dose not allow null values as keys and values. hashtable is syncroniged.hashmap is not syncroniged.hashtable can change the iterator.

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Vinay

• Sep 4th, 2012

Adding couple of other differences between Set and Map:
1. You can have an iterator for a set but not a map.
2. Processing a complete map takes longer whereas processing a complete set takes a comparatively less time (reason - iterator)

Pattukkottai Arun

• Jul 21st, 2005

A Set is a collection that has no duplicate elements.  A List is a collection that has an order assoicated with its elements.  A map is a way of storing key/value pairs. The way of storing a Map is similar to two-column table.

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jimmy514in

 Profile Answers by jimmy514in Questions by jimmy514in

• Jul 5th, 2010

Component Swing: Swing is light weght Component Applet: Applet is heavy weight Components Look and feelSwing: Using UIManager swing have look and feel according to user view You can change look and fe...

Prasanna kanth

• Sep 13th, 2005

I also have the same doubt, but still i not getting a clear idea

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Lokesh

• Feb 24th, 2015

Input stream is for reading byte data from filestream whereas output is for writing

Pattukkottai Arun

• Jul 21st, 2005

An input stream produces a stream of characters; an output stream receives a stream of characters, ?one at a time.?  

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paulson paul chambakottukudyil

• Apr 11th, 2006

Abstract,static,final and interface cannot be considered as access modifiers. The access modifiers in Java are public, private and protected.

Rajesh Sakhamuri

• Nov 2nd, 2005

By Rajesh:Access modifiers are bstract,static,final,interface.static members are created only one copy,that copy can be shared with all the objects.static class can access only static members.fin...

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theJavaGuy

 Profile Answers by theJavaGuy Questions by theJavaGuy

• Jan 30th, 2010

Two ways-1. By extending Thread class2. By implementing Runnable interfaceWe extend the thread class when we are creating a new thread to assign a specific type of job to that thread. But if we want t...

gyanesh

• Jul 20th, 2005

The thread can be created either by extending the Thread class or implement the Runnable interface.

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nakt

• Nov 18th, 2005

The eauals method of Object class checks whether the objects refeences by the variables is same or not . It does not check the contents of the object . Therefor if the contents are to be checked for ...

dpk

• Sep 9th, 2005

== checks whether two types points to same object. equals() checks whether the stored value is same in two.

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zhousx18

• Dec 26th, 2005

Bruce Eckel pointed out fouty-seven differences  in his book of  "Thinking in Java 1st edition" in 1998:However, there are a surprising number of differences between C++ and Java. ...

Pattukkottai Arun

• Jul 22nd, 2005

Java does not support typedefs, defines, or a preprocessor. Without a preprocessor, there are no provisions for including header files.   Since Java does not have a preprocessor there is no ...

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ashok16

 Profile Answers by ashok16 Questions by ashok16

• Aug 10th, 2010

RMI architecture consists of four layers and each layer performs specific functions: 1. Application Layer: Contains the actual object definition. 2. Proxy Layer: Consists of stub and skeleton. 3....

Pattukkottai Arun

• Jul 22nd, 2005

Java Remote Method Invocation (Java RMI) enables the programmer to create distributed Java technology-based to Java technology-based applications, in which the methods of remote Java objects can be in...

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