Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java)

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Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

Java Tutorial: Java Synchronization (Why we use Synchronization[Bank] | Synchronization in java) 

BankAccount.java

public class BankAccount
{

    private int accountNumber;
    private double accountBalance;
    
    private AccountDAO dao;

    public synchronized boolean deposit(double amount)
    {
        double newAccountBalance;
        /*
         * Get the current balance from DB table.
         */
        accountBalance = dao.getCurrentAccountBalance(accountNumber);
        
        if (amount < 0.0)
        {
            /*
             * Can not deposit a negative amount.
             */
            return false; 
        }

        else
        {
            newAccountBalance = accountBalance + amount;
            /*
             * Update the new balance in the DB table.
             */         
            dao.updateAccountBalance(newAccountBalance);
            return true;
        }

    }
}

AccountDAO.java

public class AccountDAO
{

    public double getCurrentAccountBalance(int accountNumber)
    {
        /*
         * Code to get the current balance from DB table.
         */
        return 0;
    }

    public void updateAccountBalance(double newAccountBalance)
    {
        /*
         * Code to update the new balance in the DB table.
         */ 
        
    }

}

Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/SynchronizationDemo_Bank_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/SynchronizationDemo_Bank_App/SynchronizationDemo

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/28b772df8f5b4b9e60fd873726243fc258cd34a2/BasicJava/SynchronizationDemo_Bank_App/SynchronizationDemo/?at=master

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