Java Database connection failed to connect Derby Database :access denied java.net.SocketPermission :

Java Database connection failed to connect Derby Database :access denied    java.net.SocketPermission :
 
Problem:
Tue Feb 11 11:49:08 EST 2014 : Security manager installed using the Basic server security policy. Tue Feb 11 11:49:09 EST 2014 : access denied ("java.net.SocketPermission" "localhost:1527" "listen,resolve") java.security.AccessControlException: access denied ("java.net.SocketPermission" "localhost:1527" "list372en,resolve") at java.security.AccessControlContext.checkPermission(AccessControlContext.java:

    Very rare cases we can get this type of exceptions . After 2 to 3 hrs of exploration and googling i found a very simple solution.you no need to waste your valuable time. Just you can go through the below single step that more than sufficent to resolve the above problem.

Solution:

1 . Find the java.policy file in your jdk platform
2. which is located in JAVA_HOME\jre\lib\security\java.policy3. For editing this file You may need administrator privileges.
4. Add this line into the grant block in java.policy file and save it
 grant
 {
      permission java.net.SocketPermission "localhost:1527", "listen,resolve";
 }


Now your problem is resolved .... :)

How to create application shortcuts in desktop (Ubuntu)

How to create application shortcuts in  desktop (Ubuntu)
-------------------------------------------------------
It is very simple ,using one command we can complete this task

gnome-desktop-item-edit --create-new ~/Desktop

If above command is not found first you need to install the 

 sudo apt-get install  gnome-panel 

Then It will shows the following GUI

• You can give the any name , command location and comment 

• Click on the image if you want to change it

Seperate thread for UI updation in Android

Where to use:
 Already one thread is running in our application ,In the same thread You want to update UI thread ,following code will help You.

"Calling the child thread  if parent thread functionality  changing every time."



Sample code:
---------------------------

//Parent thread
@Override
                public void onMessage(final String message) {
//child thread
runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                    // UI Updations
                           
                            t.append("\n"+message);
                        }
                    });
}

Class has two properties of the same name , At the time of Java Bean to xml conversion

Name Of the Error:

Class has two properties of the same name "fieldName"
this problem is related to the following location:
--------------


Solution:
------------------------------

@XmlRootElement(name="yourRootElementName") @XmlAccessorType(XmlAccessType.FIELD)

Hint:
At the time of binding java bean to xml ,jaxb impl always look the getters methods .so if you are
used the above annotation then binding will takes by fields(all fields)


The use of access type FIELD will cause JAXB implementations to create bindings for:

1.  fields
2.  annotated properties

Java Just In Time compiler-JIT compiler

In Java you have to write and compile a program only once. The Java on any platform will interpret the compiled bytecode into instructions understandable by the particular processor. However java virtual machine handles only one bytecode instruction at a time that makes execution slow. But Using the Java just-in-time compiler at the particular system platform compiles the bytecode into the particular system code. After the code has been (re-)compiled by the JIT compiler, it will usually run more quickly on the computer.
The just-in-time compiler comes with JVM and is used optionally. It compiles the bytecode into platform-specific executable code that is immediately executed. JIT compiler option should be used especially if the method executable is repeatedly reused in the code.

core skills needed by all software developers are:

The core skills needed by all software developers are:

Core Skill	Description
Read Code	The ability to understand an existing code base in order to analyze its behavior and make fixes or enhancements to it.
Write Code	This does not include any significant amount of design – just the basics of coding. An example is being able to write a method given the desired behavior (inputs, outputs, pre-conditions and post-conditions).
Design Software	The ability to determine what code is necessary to achieve some specified functionality, particularly the higher-level structure or organization of the code.
Awareness of the Software Development Life Cycle	This is an awareness of the 'big picture' of software development beyond just writing code - how the other life cycle stages (requirements, design, testing, and maintenance) impact coding and vice-versa. This includes an understanding of the types of methodologies (e.g. Agile or Waterfall) that can be used to progress through this cycle.
Use of Libraries and Frameworks	This skill could also be called "Reuse Existing Code". This skill includes the ability to search for and evaluate libraries and frameworks based on how effectively they meet your needs and the ability to integrate the chosen package into the software you are writing.
Debugging	The ability to analyze the behavior of code to diagnose a problem and find the underlying cause. This includes but is not limited to using a debugger.
Use of Integrated Development Environments	The ability to effectively use modern IDEs and an understanding of their strengths and weaknesses.
Use of Version Control	This skill includes basic use of a version control tool as well as a general understanding of software configuration management.
Automated Unit Testing	This is the ability to unit test code by writing automated tests.
Refactoring	The ability to revise existing code without impacting its functional behavior.
Use of Build Automation	This goes beyond simply writing a build script to include other related automation like continuous integration, automated deployments, and static code analysis tools.

Confirm Password Validation Using JavaScript

Password Validation Using Java Script