Resource Handling

In Java, Most of the time we open some resource and after using we forget to close the resource and that make a lots of open connection for the resouse if we are not using a good ConnectionPool for resource. Still if we are using the connectino pool, then also we need to release the resopuse after use, so other can use that resource for their operation.
here is sample framework which basically takes care of these part in your java program.

Here I have two classes, one is TransactionGuard and other is Command interface.

TransactionGuard.java

/**
* TransactionGuard is make sure you release the particular resource after use.
* By using any resource, it will make sure that you are closing the resource
* after using. To use this one need to implement getConnection and
* releaseConnection method based on the need.
*
* @author Virendra.Balaut
*
* @param
* an element/resource for which you want to implement
* TransactionGuard
*/
public abstract class TransactionGuard
{
/**
* This is the main execute method which takes care of getting a connection of T type,
* do some operation and after use close the connection.
*
* @param command
* @throws Exception
*/
public void execute(Command command) throws Exception
{
T connection = null;
try
{
connection = getConnection();
command.execute(connection);
}
finally
{
releaseConnection(connection);
}

}

/**
* Abstract method to get Connection for a dedicated Type.
*
* @return
*/
protected abstract T getConnection() throws Exception;

/**
* Abstract method to release connection for a dedicated type.
*
* @param connection
*/
protected abstract void releaseConnection(T connection) throws Exception;
}

Command.java

public abstract class Command
{
public abstract void execute();
}

Using these framework will ensure that resouce will automatically closed after use.

Sample Example :-

Here I have sample program which will do database operation. So I need to open a database connection and after use it I need to release that connection.

new TransactionGuard()
{

@Override
protected Connection getConnection() throws Exception
{
Connection connection = createConnection();
return connection;
}

@Override
protected void releaseConnection(Connection connection)
throws Exception
{
if(connection != null) {
connection.close();
}

}
}.execute(new Command()
{

public void execute(Connection connection) throws Exception
{
// Do some operation with connection.

}
});

Let me know your suggestions/views.

Gandhi Vadh Kyon(Why he killed Gandhi) ?

Last Week while my visit to mount abu I come across a book titled "Gaandhi Vadh Kyon ? ". I didn't waste single minute to buy after seeing this book. In India I think you will find this type of book very raraly.

This book is written by "Nathuram V Godse", everyone is aware of this name. This books publisher is "SatyaDharm Publication, Delhi". In this book Godse mentioning everything which forced him to kill gandhi (After reading this book I feel not to put "Jee" or any other honourable prefix/suffix after gandhi's name). There are lots of books written on partition. This book comprise of content from these book and individual. In book nathuram had mentioned that Gandi was hindu antagonistic. Partition is the disicion in which many hindu as well as muslim was killed.

Some lines from Godse..
"In Reallity my life ends when i shot gandhi. After that i was in reconciling. and living life with disinterest.I feel that gandhi jee had take up much pain for tha country and i really respect him for this service to country. But Gandhi jee didn't have right to partition of motherland by fooling conuntries people.I don't want any type of favor. I also don't want that some one beg a favor for me.

And Junstice Khosle wrote :-

"I have however no doubt that had the audience of that day been constituted into a jury and entrusted with the task of deciding Godse'appeal, they would have brough in a verdict of 'not guilty' by overwhelming majority.and it was wrost fot hindu girls, ladies. Many iof them killed thhem to save their dignity. Thousand of people were killed everyday from both of the religion with this dicision.

This book includes lots many quotes from judges and other people who are directly or indirectly involving this. In this book writer very clearly explain the Kasmir issue which is still hot. People of kashmir is still live in a fear.
Contains of book are like this
1. Partition
2. Refugee and Gandhi Jee
3. Sardar Patel and 55 Crore
4. Forsight of Gadhi's murder
5. Kasmir
6. Nathuram Petition

Also in this book Nathuram fully denined that Veer Savarkar is with him. he is even saying this is the insult of him mind and reasoning if people thinking that he did it under the guidence of Veer Savarkar. He was saying that it is not at all related to Savarkar. Even Savarkar don't know that Godse is planning to doing it.

With that there are lots of fact you will find in this book.

I am still middle of the book. I will post more bolg if i find more interesting thing in this book