1. create and compile a Java Class in Oracle Database     Create the MyTest class. MyTest has two public static methods.    --------------------------------------------   create or replace and compile java source named test as      public class MyTest{        public static void myProc(int a,int b,int[] ret){         ret[0]=a+b;       }       public static int myFunc(int a,int b){         return a+b;        }     }   /    --------------------------------------------     2. Create a procedure/function in Oracle database   2.1 Create a procedure     ----------------------------------------------   CREATE OR REPLACE PROCEDURE myProc(a in number, b in number, ret out number) AS       LANGUAGE java NAME 'MyTest.myProc(int,int,int[])';    /   -----------------------------------------------   2.2 Create a function   ----------------...