How Can I Make a Hibernate List Not Have Null Elements?

Java is one of the most popular and easily understood object oriented programming languages, considered not quite as versatile or powerful as lower level languages, like C++ or C#. One of the many ways it allows programs to manipulate data is through "methods," which are functions assigned to defined classes in a program. The "list" method draws from a predefined list or array, in order to display information to the user.

Instructions

    • 1

      Open your *.java project in Eclipse or another Java/EE/Javascript text editor. Your class files also should open with this project. Identify the list object that is invoked by the "list" method.

    • 2

      Click on the tab with the "list" or array invoked, and go through the list, deleting spaces. The only spaces allowed in lists are right after the comma, to delineate between different list objects. Extra spaces are reported as "NULL" -- throwing off the display of your list.

    • 3

      Alter the "list" method call with the "bag" method, which "null-checks" lists by automatically cleaning up the syntax typos -- superfluous spaces that cause "NULL" to display when the program is run.

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