The Collections API is a set of classes and interfaces that support operations oncollections of objects.

Rahul Sharma

• Oct 12th, 2007

Collection API's are a group of classes where we can store more then one objects in as a single unit. Collection give some useful API where we can directly implement the Data structures.

ramu

• Mar 10th, 2006

A collection allows a group of objects to be treated as a single unit .Arbitrary objects can be stored ,retrieved and manipulated as elements of this collections

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meher.jogeswar

• Oct 18th, 2007

Here only one object is created.it's store in heap area.but there is 5 reference is created,which is store in stack area.

bihag

• Mar 17th, 2007

One object is created of array. thread variable is refering to it,Created object is type array not type of Thread

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skmeer

 Profile Answers by skmeer Questions by skmeer

• Oct 24th, 2007

Interface is used to define set of rules. Interface is a collectionof empty methods. It is solely used as a base class. Class which implents an interface need to provide the implemenation of the methods in the interface.

riteshyadav14@rediffmail.com

• Sep 8th, 2005

Its a java way to deal with multiple inheritance .....

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dear_srik

 Profile Answers by dear_srik Questions by dear_srik

• Oct 27th, 2007

Assertions are kind of mechanisms in java from 1.4 onwards, where assert is a keyword. By using assertions you can validate your assumptions. Assertions should be only used to validate certain assumpt...

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With respect to multithreading, synchronization is the capability to control the access ofmultiple threads to shared resources. Without synchronization, it is possible for onethread to modify a shared object while another thread is in the process of using orupdating that object's value. This often leads to significant errors.

bijuleo

 Profile Answers by bijuleo Questions by bijuleo

• Nov 8th, 2007

Synchronization is the mechanism that ensures that only one thread is accessed the resources at a time. In a practical point of view assume that two threads are trying to update bank balance at the sa...

priya

• Sep 13th, 2007

Synchronisation is a phenomenon in multithreaded programming which enforce synchronicity when we need it. For eg, if we want two threads to share a complicated datastructure?we need to ensure that th...

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r.praveenkumar

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• Nov 19th, 2007

String s="10";int a= Integer.parseInt(s);  //Integer.parseInt() method is used to convert str to int

sarathi trichy

 Profile Answers by sarathi trichy Questions by sarathi trichy

• Oct 25th, 2007

String a='5';int i;i=int(a);

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No. Compilation error will occur.The error message is : main method should be public

Ashok Agnihotri

• Nov 19th, 2007

NO, it will not run because main is private and it should be public in order to run this code.

Jignesh

• Mar 25th, 2007

No it won't creat any compile time and Run time exception..... and also it is possible to add Inner class at Method Level.

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DEBABRAT

• Nov 24th, 2007

To create word doc use MIME type "application/msword"ORuse POI ,is an open source apache project to create, read ms office file formati.e .doc, .xls, for more info visit poi . apache . org/

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The Frame class extends Window to define a main application window that can have amenu bar.

pardeep16d

 Profile Answers by pardeep16d Questions by pardeep16d

• Nov 28th, 2007

Frame can be part of the window but window can not part of the frame. like e.g. when you will create frames with the help of HTML at that time you see many frames in a one window but we can't make a window in frame so we can say fram is a part of window.i think so ........

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rkbalag

 Profile Answers by rkbalag Questions by rkbalag

• Dec 5th, 2007

We can use Hashtable to store different types of data in a single arrayHashtable hash = new Hashtable();hash.put("INT_OBJ",new Integer("1"));hash.put("STR_OBJ",new String("A")); hash.put("BOL_OBJ",new BOOLEAN(true)); 

agnihotri111984

 Profile Answers by agnihotri111984 Questions by agnihotri111984

• Nov 20th, 2007

According to my knowledge it is impossible but if it is possible then also share this information with me at agnihotri111985@timesindia.com.

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Window

vikas_361

 Profile Answers by vikas_361 Questions by vikas_361

• Dec 9th, 2007

System.Windows.Forms.CommonDialog

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The read() method returns -1 when it has reached the end of a file.

gerald.amalraj

 Profile Answers by gerald.amalraj Questions by gerald.amalraj

• Dec 16th, 2007

It returns null value if its a char type and -1 if its a byte type.

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nkamuni

 Profile Answers by nkamuni Questions by nkamuni

• Dec 19th, 2007

Equals is the method of object used for comparing the objects where as == is used for numberic comparisions

sarathi trichy

 Profile Answers by sarathi trichy Questions by sarathi trichy

• Oct 25th, 2007

= means the  assingmentEX:a=10;b=a;then b=10;== means equality checkinga=10;b=10;if(a==b)System.out.println("equal");elseSystem.out.println("not equql");

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What is reflection and its use in java?

nkamuni

 Profile Answers by nkamuni Questions by nkamuni

• Dec 19th, 2007

Reflection is commonly used by programs which require the ability to examine or modify the runtime behavior of applications running in the Java virtual machine. This is a relatively advanced feature a...

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The operating system's task scheduler allocates execution time to multiple tasks. Byquickly switching between executing tasks, it creates the impression that tasks executesequentially.

aseemak

 Profile Answers by aseemak Questions by aseemak

• Dec 22nd, 2007

Hyperthreading processors have more than one execution units but only one processor core, thats how multiple tasks are performed simultaneously

sivanesh.a

 Profile Answers by sivanesh.a Questions by sivanesh.a

• Dec 24th, 2006

By Context switching.

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nauityal

 Profile Answers by nauityal Questions by nauityal

• Dec 24th, 2007

//declareprivate JTabbedPane pane ; //initialisepane = new JTabbedPane(); //add GUI components to the TABPANEpane.addTab(nameoftab, component);

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shaik subhani

 Profile Answers by shaik subhani Questions by shaik subhani

• Dec 26th, 2007

final is a keyword used to declare constants. finally block is used in an exception handling.whether there is an exception or not in try block in , finally block will be executed.we used to provide th...

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hemasundar

 Profile Answers by hemasundar Questions by hemasundar

• Jan 2nd, 2008

We use synchronized methods or synchronised blocks to?make your application thread safe.?You can use synchronized methods, but the problems may be:1. It degrades the performance of your application....

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How String object is immutable and why?

ramnath_19

 Profile Answers by ramnath_19 Questions by ramnath_19

• Jan 3rd, 2008

Ur question can be answered with an example : String s = "here it goes";s.toUppercase(); This does not modify the variable s at all. Instead, a new String object is created with all the cha...

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ravi_1229

 Profile Answers by ravi_1229 Questions by ravi_1229

• Mar 24th, 2008

The number is only the status code for the termination of the JVM. It does not effect the actual command. By convention 0 means a normal exit, any other number is an abnormal termination.

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