Try to do this. I hope this ca help you.

   CallableStatement callStmt=m_conn.prepareCall("{call ?:=test1(3) }");
    callStmt.registerOutParameter(1,java.sql.Types.DOUBLE);
    ResultSet Rs=callStmt.executeQuery();
    System.out.println("OUT "+callStmt.getDouble(1));


Omar Vera.

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