請問如何在JAVA類中調用壹個Oracle的自定義函數？

cs = conn.prepareCall("{ ?=call goode(?,?)}");

// Register the type of the return value

cs.registerOutParameter(1, Types.NUMERIC );

// Set the value for the IN parameter

cs.setString(2,"lz");

cs.setString(3,"lz");

// Execute and retrieve the returned value

cs.execute();

int retValue = cs.getInt(1);