Intermediate

26-12.

Put the following steps for accessing a Java class from PL/SQL in order:

Grant the necessary privileges on the PL/SQL wrappers.
Use javac (or an Integrated Development Environment such as JDeveloper ) to compile the Java code.
Write PL/SQL wrappers to publish the class’ methods.
Call the PL/SQL wrapper programs.
Use loadjava to load the class into the database.

26-13.

Show the operating system commands that load the following class into the SCOTT (password TIGER) schema:

public class helloWorld {
   public static void doit () {
       System.out.println("Hello World!!!");
   }
}

26-14.

Show the Oracle8i DDL command that loads the following class into the database:

public class helloWorld {
   public static void doit () {
       System.out.println("Hello World!!!");
   }
}

26-15.

What clause must you include in a function or procedure header to create a call spec for a Java method?

  1. PARALLEL_ENABLE

  2. LANGUAGE JAVA

  3. JAVA SPEC

  4. AUTHID USER

  5. DETERMINISTIC

26-16.

What is the Java equivalent of the command SET SERVEROUTPUT ON?

26-17.

To publish a void Java method, you should use a PL/SQL:

  1. Function

  2. Blob

  3. Procedure

  4. Index-by table

  5. External procedure

26-18.

For each PL/SQL datatype in the left column, provide a corresponding Java datatype (there are many possible answers):

PL/SQL Datatype

Java Equivalent

VARCHAR2

 

DATE

 

NUMBER (integer)

 

NUMBER (real)

 

ROWID

 

OBJECT

 

RAW

 

26-19.

Write a call spec for the following Java class:

public class OutputTest {
  public static void printIt (String s) {
     System.out.println (s);
  }
}

26-20.

Write a call spec for ...

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