Java SP Wrapper

• Java uses pass-by-value, but...

• Fields inside object parameters may be modified

• DemoProcArg.java source code:

  public class DemoProcArg {
  
  public int returnArg;
  }

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One reason to write a stored procedure is that Java does not return values in primitive arguments (simple integers, etc.) whereas stored procedures allow OUT and INOUT parameters. With Java you can modify a field encapsulated within an object parameter, and the wrapper sp can hide the details. In this example DemoProcArg is a Java class created for the sole purpose of returning an integer value as a parameter.