This week's book giveaways are in the Jython/Python and Object-Oriented programming forums. We're giving away four copies each of Machine Learning for Business: Using Amazon SageMaker and Jupyter and Object Design Style Guide and have the authors on-line! See this thread and this one for details.
I tried to write a code that reads the data from excel sheet and writes into DB2 database.It worked perfectly .But if it has repetition fields, then also it inserts the data.So I used a primary key in the database to avoid repetition.Then I wrote a code which inserts data into database when there is no repetition of data.But if it contains repeatitive data, then it must rollback all the process in database or remove the data that is inserted through the program.I used save point and rollback for this action. When i run the program it shows "java.lang.UnsupportedOperationException ".Can anyone help me out. So my code is