Java stored procedure calling in java program

Question

What I should do is to create a Java stored procedure and later call it from Java program.

I am having problems executing the JAVA program - JDBCPiemers (below) wit

Answer 1

            CallableStatement stmt = null;
            String sql = "{call movecartrecord(?)}";
            try 
            {
                stmt = conn.prepareCall(sql);
                stmt.setInt(1, order_id); //you can pass argument if procedure accepts
                stmt.execute();
                stmt.close();

                String name = stmt.getString(1);
                System.out.println("Name : " + name);
            } 
            catch (SQLException e)
            {               
                e.printStackTrace();
            }

Here movecartrecord() is a stored procedure name and conn is a connection object.

Here order_id passes as argument. If your stored procedure don't have any argument then just leave that line code.

Hope it will work and help you.

Here is a wonderful code that show you how to perform it.

Answer 2

To return a value you need it to be a function, not a procedure:

  public static String getBreweryInfo (int Raz_ID) 
  throws SQLException 
  { 
    String sql = 
      "SELECT Nosaukums FROM Alus_razotaji WHERE ID = ?";//vaicajums
    try {
      Connection conn = DriverManager.getConnection("jdbc:default:connection:");
      PreparedStatement apstmt = conn.prepareStatement(sql);
      apstmt.setInt(1, Raz_ID); 
      ResultSet rset = apstmt.executeQuery();// SQL vaicājuma izpildīšana

      if (rset.next()) {
          return rset.getString(1);
      } 
    }
    catch (SQLException e) {
      System.err.println(e.getMessage()); //Kļūdu izvadīsana
    } 
    finally {
      rset.close();
      apstmt.close(); //Savienojuma aizvēršana
    } 
  }

Then your package becomes:

CREATE OR REPLACE PACKAGE BODY BeerBeer AS
  FUNCTION getBreweryInfo(Raz_ID number) RETURN varchar2 AS Language Java
  NAME 'BeerBeer.getBreweryInfo(int) return java.lang.String';
END BeerBeer;

And you call it something like:

        String SQL = "{CALL ? = BeerBeer.getBreweryInfo (?)}";
        stmt = conn.prepareCall(SQL);
        int Raz_ID = 4;
        stmt.registerOutParameter(1, java.sql.Types.VARCHAR);
        stmt.setInt(2, Raz_ID);
        System.out.println("Izpildam JAVA glabajamo proceduru ...");
        // Vaicājuma izpilde
        stmt.execute();
        //Izgustam Alus_razotaja nosaukumu ar getXXX metodi.
        String Razotajs = stmt.getString(1);

Note that the out parameter is now index 1 as it's the return from the function, so the value you pass in is now index 2. All untested of course...