Oracle stored procedure to Java stored procedure

Question

Hello,
I got a school assignement "Create a java stored procedure and call it out from JAVA program outside database".
I've done it, but in case of JAVA stored procedure I have the procedure written in PL/SQL.
PL/SQL procedure:
CREATE OR REPLACE PROCEDURE getDogInfo
(Dog_ID IN NUMBER, Dog_name OUT VARCHAR) AS
BEGIN
  SELECT Name INTO Dog_name
  FROM Dog_family
  WHERE ID = Dog_ID;
END;
How do I convert it to JAVA stored procedure?
Maybe it's just plain stupid and I should keep it as PL/SQL? I don't know if I have done it right.
Also I don't know what to do with IN/OUT parameters in JAVA.

Answer 1

Could my procedure java class look something like this? I am aware that I have to make a PL/SQL function that is associated with JAVA method CALL, just asking about JAVA Class at the moment.
import java.sql.*;
import java.io.*;
public class Procedure {
  public static void getDogInfo (int Dog_ID, String Dog_name)
    throws SQLException
    { String sql =
      "SELECT Dog_name INTO Name FROM Dog_family WHERE ID = Dog_ID";
    try { Connection conn = DriverManager.getConnection("jdbc:default:connection:");
      PreparedStatement apstmt = conn.prepareStatement(sql);
      apstmt.setInt(1, Dog_ID);
      apstmt.registerOutParameter(2, java.sql.Types.VARCHAR);
      ResultSet rset = apstmt.executeQuery();
      rset.close();
      apstmt.close(); //Connection close
    catch (SQLException e) {System.err.println(e.getMessage());
My java program looks like this:
package client;
import java.sql.*;
public class JDBCPiemers {
    static final String JDBC_DRIVER = "oracle.jdbc.OracleDriver";
    static final String DB_URL = "jdbc:oracle:thin:@localhost:1521:ORCL";
    static final String USER = "SYSTEM";
    static final String PASS = "asdasd";
    private String sql;
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Connection conn = null;
        CallableStatement stmt = null;
        try {
            //Registering JDBC driver
            Class.forName("oracle.jdbc.driver.OracleDriver");
            System.out.println("Connecting to database ...");
            conn = DriverManager.getConnection(DB_URL, USER, PASS);
            System.out.println("Preparing command...");
            String SQL = "{CALL getDogInfo (?, ?)}";
            stmt = conn.prepareCall(SQL);
            int Dog_ID = 4;
            stmt.setInt(1,Dog_ID);
            stmt.registerOutParameter(2, java.sql.Types.VARCHAR);
            System.out.println("CALL of JAVA stored procedure ...");
            // Executing SQL
            stmt.execute();
            //Using getXXX method
            String Name = stmt.getString(2);
            System.out.println("Printing results ...");
            System.out.println("ID NR. " +Dog_ID + " is Dog with
a name  '" + Name + "'" );      
            stmt.close();
            conn.close(); }
            catch(SQLException se) {
                //JDBC Errors
                se.printStackTrace(); }
            catch(Exception e) {
                //Errors Class.forName
                e.printStackTrace(); }
            finally {
                //Clossing resurses
                try {if(stmt!=null)
                stmt.close(); }
            catch(SQLException se2) {}
                try {if(conn!=null)
                conn.close(); }
                catch(SQLException se) {se.printStackTrace(); }
                //finally block end
            } // try
            System.out.println("Closing program."); }}