choice:a)compilation errorb)runtime errror Or what is the result?

vegetto

 Profile Answers by vegetto Questions by vegetto

• Jun 16th, 2008

It will result in a compilation error because first thing is that you have not written method body ,else if you don't want to write method body then declare it abstract and terminate it using semi colon.

agsuvidha

 Profile Answers by agsuvidha Questions by agsuvidha

• Aug 14th, 2007

This is perfectly fine as this is just an alternate way to create arrays int a[] or int[] a is exactly same

Answer Question  Select Best Answer

dgshivas

 Profile Answers by dgshivas Questions by dgshivas

• Feb 25th, 2008

Referential Intigrity is nothing but Primary Key concept in OracleBrowsers only understand HTML ,but we dont run servletes and jsp's at broweser side we run them at server side we get the values and we embed them with HTML

deepak

• Nov 24th, 2007

Browsers understands only HTML language and therefore we are able to run servlets and JSP in the browser as Servlet is HTML embedded in Java and JSP is Java enbedded in HTML.

Answer Question  Select Best Answer

smita25

 Profile Answers by smita25 Questions by smita25

• May 6th, 2008

It will load the driver jdbd odbc

gptnitesh

 Profile Answers by gptnitesh Questions by gptnitesh

• Sep 10th, 2007

Normally, when you say Class.forName("class.name"); it creates an instance of itself and registers it with DriverManager. It loads class in memory. and while loading, it also calls static bl...

Answer Question  Select Best Answer

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.

Answer Question  Select Best Answer

daydreaming sweet

 Profile Answers by daydreaming sweet Questions by daydreaming sweet

• Mar 20th, 2011

It is to add all the classes and sub classes of that package.

sarathi trichy

 Profile Answers by sarathi trichy Questions by sarathi trichy

• Oct 25th, 2007

*denotes include all the classes and sub packagein javaswing

Answer Question  Select Best Answer

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");

Answer Question  Select Best Answer

Ariti

• Sep 24th, 2007

Static block always executed immaterial of any thing so you can apply it for keep tracking of user visits.Static methods are always executed only by calling it through class name

SATCH

• Sep 7th, 2007

A STATIC block is automatically executed the first time the class where it is defined is called. A Static Method is excuted only when a static call is made to this method.

Answer Question  Select Best Answer

r.praveenkumar

 Profile Answers by r.praveenkumar Questions by r.praveenkumar

• 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);

Answer Question  Select Best Answer

class A { // some code here} class B { // some code here}class Ex {public static void main(string args[]) {A a=new B();B b=new A();a.add();b.add();}Will this program run? Explain the referencing the object instances. What is the result;

craig.cattell

 Profile Answers by craig.cattell Questions by craig.cattell

• Jan 15th, 2008

No it will not compile - as A does not extend B nor vice-versa when you try to assign an object of type B to a reference of type A (and vice-versa) you will get an 'Incompatible type' error me...

foiaz

 Profile Answers by foiaz Questions by foiaz

• Dec 27th, 2007

Yes, this program will execute. Reference variables a and b holds the object instance of Class B and Class A respectively. i.e it points to the memory locations of those objects.a.add() will call the add() method of Class B. and b.add() will call the add() method of Class A.

Answer Question  Select Best Answer

Is it possible to define final keyword before constructor.if yes then describe?

varanasisaikarthik

 Profile Answers by varanasisaikarthik Questions by varanasisaikarthik

• May 1st, 2008

generally, final keyword is used when we want not to override the class, or not to over ride the subclass methods, but Constructor have the methods or datamembers to activated when we instantiaed, so,...

lukeyuan

 Profile Answers by lukeyuan Questions by lukeyuan

• Feb 14th, 2008

No, constructor takes only access modifier such as public, protected, private or NONE. Threrefore, constructor can not be abstract, final, native,static, or synchronized.

Answer Question  Select Best Answer

What is the difference between throw and throws

ravi_1229

 Profile Answers by ravi_1229 Questions by ravi_1229

• Mar 24th, 2008

if user program explicitly wants to throw an exception(inbuilt or userdefined) then throw keyword is used. if the user program wants to throw an exception in a particular condition then throw   k...

ravi_1229

 Profile Answers by ravi_1229 Questions by ravi_1229

• Mar 24th, 2008

if user program explicitly wants to throw an exception(inbuilt or userdefined) then throw keyword is used.if the user program wants to throw an exception in a particular condition then throw  key...

Answer Question  Select Best Answer

Explain the difference between Java and J2EE in detail?

deepak_tandon2005

 Profile Answers by deepak_tandon2005 Questions by deepak_tandon2005

• Jun 30th, 2008

Java refers to basic concept of java as well as new technical features making foundation of java/j2ee.j2ee is used for enteprise application based on java concept.if java is foundation then j2ee is building for business purpose. 

r.praveenkumar

 Profile Answers by r.praveenkumar Questions by r.praveenkumar

• Mar 20th, 2008

java refers to core java and j2ee refers to the technologies that are developed using java. for example inheritance, exception handling, multithreading are some of the concepts in java and servlets, R...

Answer Question  Select Best Answer

What is Nullpointer Exception How it will be reduced

abuthahir.d

 Profile Answers by abuthahir.d Questions by abuthahir.d

• Apr 14th, 2008

There are many reasons to get a Null pointer Exception . Burn it in ur Brain : NullPointerException can occur only on OBJECTS . not primitives.the above said answer holds a good example .Example 2: &n...

shyamgosavi648

 Profile Answers by shyamgosavi648 Questions by shyamgosavi648

• Apr 2nd, 2008

I can give you example  if you create string array and you not assing any value for that string object.  when you want print this array  the JVM give Null pointer Exception              

Answer Question  Select Best Answer

I need an algorithm for some program. I'll take some number (say 'n'), then i should print the numbers in spiral shape starting from square(n). Can any one pls help me..Ex: if n=3, it should print like9 8 72 1 63 4 5Thanks in advance

datdo

 Profile Answers by datdo Questions by datdo

• Jan 29th, 2009

//spiral//by datdo//translated C codepublic class Spiral {int n =3;public static int SPIRALHEIGHT =  n;public static int SPIRALWIDTH = n;public static main(String[] args) {    int ...

Gerda

 Profile Answers by Gerda Questions by Gerda

• May 8th, 2008

One of possible solutions:public class NumberSpiralShape { /*** @param args*/public static void main(String[] args) { // TODO Auto-generated method stub int n = 3, i, side = n, x=0, y=0;int tab [...

Answer Question  Select Best Answer

disskyz29

 Profile Answers by disskyz29 Questions by disskyz29

• Sep 3rd, 2008

public class Names { public static void main (String [] args) {  int count = 0;  String names[] = {"Valerie", "Jia", "Debbie", "Harvey&...

srinivasan_81

 Profile Answers by srinivasan_81 Questions by srinivasan_81

• Aug 3rd, 2008

The below code produces the output along with the names that have the conditions:class StringTest { public static void main(String[] args)  {  String s[]={"jennie","...

Answer Question  Select Best Answer

How to use a constructor in a Java program?

justjiten

 Profile Answers by justjiten Questions by justjiten

• Dec 4th, 2008

In a Java program constructor is used for object creation.With the help of new operator we create the new object for the class by calling its constructor.

banduskank

 Profile Answers by banduskank Questions by banduskank

• Jun 30th, 2008

When you want create an object at that time you use the constructor. The purpose of Constructor is only to create object. If you not provide Constructor then compiler create default Constructor to create object.

Answer Question  Select Best Answer

What is marker sweeper algorithm in garbage collection?

ramkrishnag

 Profile Answers by ramkrishnag Questions by ramkrishnag

• Sep 9th, 2008

Mark and Sweep garbage collection is 2 phase algorithm.In the first phase, it finds and marks all accessible objects recursively and in second phase it scans through the heap and reclaims all the unma...

bh2008

 Profile Answers by bh2008 Questions by bh2008

• Jun 30th, 2008

"Mark the unused object for garbage collection and collect it."As per the algorithum there will be two thread.One will mark all the unreferenced object for garbage collection and the other will reclaim the marked object memory.

Answer Question  Select Best Answer

How to create a class that has only one object?

atmarammuduli

 Profile Answers by atmarammuduli Questions by atmarammuduli

• Jul 10th, 2008

Refer my previos rep:Method 3 is a way to create per thread singleton object. ie. every thread will have its own singleton object for its own disposal.Method 2,1 will fall into a waiting state for singleton object until freed from other thread, adding to performance issue.

atmarammuduli

 Profile Answers by atmarammuduli Questions by atmarammuduli

• Jul 10th, 2008

There r several way to create Singleton object:1. By using single static private object & using a static method while returning same object on every call. 2. using a static boolean flag for checki...

Answer Question  Select Best Answer

What is the basic functionality of DataOutput interface in java?

aleemkh

 Profile Answers by aleemkh Questions by aleemkh

• Jul 22nd, 2008

The DataOutput interface provides for converting data from any of the Java primitive types to a series of bytes and writing these bytes to a binary stream.

aleemkh

 Profile Answers by aleemkh Questions by aleemkh

• Jul 22nd, 2008

DataOutputStream is the class which implements DataOUtput Interface. The DataOutput interface provides for converting data from any of the Java primitive types to a series of bytes and writing these bytes to a binary stream.

Answer Question  Select Best Answer

Java has Userdefined Unchecked Exceptions or not? If answer is YES, How to create Userdefined Unchecked Exceptions?

r.praveenkumar

 Profile Answers by r.praveenkumar Questions by r.praveenkumar

• Sep 18th, 2008

I think there is no possibility of creating user defined unchecked exceptions.

aleemkh

 Profile Answers by aleemkh Questions by aleemkh

• Sep 17th, 2008

Unchecked exceptions are those which extend RunTimeException? what do you mean by userdefined unchecked exceptions? Unchecked exceptions are thrown only at run time. The question is ambiguous.

Answer Question  Select Best Answer