a) Classes in the same package can access each other.
b) The inherited class should be in the same package as the parent class.
c) Package name a.b implies, package b is inherits from package a.
d) Package access is next to private access in being restrictive.

Amith

• Feb 5th, 2013

I think your first option is true. But any how these things depends on access specifiers. If you are not specifying any access specifier default package level access will be applied to the classes, wh...

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Prasad MN

• Dec 28th, 2012

We can implements SingleThreadModel in Servlets Class.

Code
 

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Jul 26th, 2012

Servlets dont run in their own threads. Instead, when a request comes in, the app server removes a thread from a master thread pool and uses it to drive the servlets service method. Once the service method has returned, the thread is returned to the thread pool.

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chaithanya chatla

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• Dec 28th, 2012

Finally block having the statements which are releasing the resource, closing the streams, closing the connection and so on. If exception is raised or not but closing the resource are necessary. So we can keep statements inside the finally block those should be get executed compulsory.

Ajit4U

• Dec 24th, 2012

Finally is the block which will be executed irrespective of exception caught in catch block.
Hence it is useful to do any resource releasing/ connection closing after exception handling

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void f() throws IOException
Which of the following is/are correct overriding method?
a) void f() throws IOException
b) public void f()
c) void f() throws FileNotFoundException
d) void f() throws Exception

imAjit

 Profile Answers by imAjit Questions by imAjit

• Dec 24th, 2012

a) void f() throws ioexception Bcoz the overriding method must NOT throw checked exceptions that are new or broader than those declared by the overridden method. For example, a method that declares a...

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There is no method in the Serializable interface. The Serializable interface acts as a marker, telling the object serialization tools that your class is serializable.

Prasad MN

 Profile Answers by Prasad MN Questions by Prasad MN

• Dec 17th, 2012

There is no methods in serializable interface. It is a marker interface and null interface.

ram

• Nov 22nd, 2012

Does not have any methods in Serializable interface......

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How to convert list object in to map object?

sree

• Nov 6th, 2012

List list;
Map map = new HashMap();
for (Item i : list) map.put(i.getKey(),i);

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Hari

• Nov 2nd, 2012

Only 4 ways.
1) Class c=new Class(); -->Using new operator
2) Class.forName("Class"); -->Using class.forName
3) NumberFormat object=NumberFormat.getNumberInstance(); -->Using Factory methods
4) Class c=new Class();
Class c2=(Class)c.clone(); -->using Cloning

praveen

• Aug 8th, 2012

1.newInstance()
2.static factory()
3.InstanceFactory()
4.factoryPattern()
5.deserialization
6clonning
7.new keyword.

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krish

• Oct 31st, 2012

Packages is nothing but Classes and Interfaces and sub-packages.
Sub-packages is nothing but Classes and Interfaces and sub-sub-packages.

Prashant Wayal

• Oct 19th, 2012

A package is a container which consists of classes and interfaces.

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lokanath reddy

• Oct 25th, 2012

Class.forName("full qualm name"); is used to load the driver explicitly and DriverManger.registerDriver(new classname()); will implicitly loads the driver automatically

ruchi

• Jan 9th, 2006

Class.forName() is a method ,this method takes a string representing a fully qualified class name(one that includes the package name) and loads the corresponding class.

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karthika

• Oct 18th, 2012

Wrapper classes are the base class for the primitive datatypes.To be accessed as objects;
wrapper classes are used to be able to use primitive datatypes as objects...............

varun sharma

• Dec 6th, 2006

another informative thing is;there are 8 wrapper classes in J2EE

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The Locale class is used to tailor program output to the conventions of a particulargeographic, political, orcultural region.

pon suresh

• Oct 6th, 2012

What is object class in java?

prabakaran29

 Profile Answers by prabakaran29 Questions by prabakaran29

• Aug 19th, 2012

The locale class to used to tailor program output to the conventions of a particular geographic, political, or cultural region

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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.

Madhuri Hasure

• Sep 27th, 2012

Preemptive scheduling enables the highest priority task execution until waiting or dead states entered. It also executes, until a higher priority task enters. Time slicing allows a task to execute fo...

Tejas Chavan

• Oct 18th, 2011

preemptive Scheduling:- the highest priority thread executes First that means when one thread is in running state that time the highest priority interrupt enters then this interrupt will executes firs...

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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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Elangovanjavanandhan

• Aug 31st, 2012

Java is a platform independent and pure object oriented programming language. the java programs mainly developed for embedded system application.

Sharmila

• Mar 28th, 2007

JasperReports is a powerful open source Java reporting tool that has the ability to deliver rich content onto the screen, to the printer or into PDF, HTML, XLS, CSV and XML files.Check this link out http://java-source.net/open-source/charting-and-reporting/jasperreports

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An unreachable object may become reachable again. This can happen when the object'sfinalize() method isinvoked and the object performs an operation which causes it to become accessible toreachable objects.

prabakaran29

 Profile Answers by prabakaran29 Questions by prabakaran29

• Aug 19th, 2012

Yes it is possible.using finalize in garbage collection

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Jul 31st, 2012

No, an unreachable object cannot be reached again.

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How to compress a String (algorithem)?

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Aug 1st, 2012

"java import java.io.ByteArrayOutputStream; java.io.IOException; import java.util.zip.GZIPOutputStream; import java.util.zip.*; public class zipUtil{ public static String compress...

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How to convert bytecode to sourcecode?

Sandhya.Kishan

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• Aug 1st, 2012

A Java Decompiler (JD) can convert back the Bytecode (the .class file) into the source code (the .java file).

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How to avoid deadlock in Java?

Sandhya.Kishan

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• Aug 1st, 2012

A deadlock occurs when one thread has the control for A and tries to get the control for B while another thread has the control for B and tries to get the control for A. Each will wait forever for the...

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How to change jar file icon.

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Aug 1st, 2012

The jar file doesnt have an icon, its a system-wide setting that applies to ALL jar files.

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What algorithm is used in garbage collection?

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Aug 1st, 2012

The algorithms used by garbage collectors are
1.Na?ve mark-and-sweep
2.Tri-color marking

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