java.lang.NullPointerException: Cannot invoke "org.netbeans.api.debugger.ActionsManager.removeActionsManagerListener(String, org.netbeans.api.debugger ...
This TOTD (Tip Of The Day) shows how to create a Persistence Unit (PU) for a MySQL database using NetBeans IDE. This PU can then be used in any of Java EE artifacts (JSP, Servlet, EJB, …) for database ...
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