O método a seguir quero inserir vários registros simultaneamente.

public void insert() {
    try {
        this.connection.setAutoCommit(false);
        PreparedStatement ps = this.connection.prepareStatement(
                "INSERT INTO  COMPANY (NAME,Address) Values (?,?)", new String[]{"ID"});
        ps.setString(1, "X01");
        ps.setString(2, "Address1");
        ps.addBatch();

        ps.setString(1, "Y01");
        ps.setString(2, "Address2");
        ps.addBatch();

       //EXCEPTION OCCURS HERE
        int[] numUpdates = ps.executeBatch();

        for (int i = 0; i < numUpdates.length; i++) {
                System.out.println("Execution " + i +
                        "successful: " + numUpdates[i] + " rows inserted");
        }

        ResultSet resultSet =
                (ps).getGeneratedKeys();
        while (resultSet.next()) {
            String deptNoKey = resultSet.getString(1);
            System.out.println("Automatically generated key value = "
                    + deptNoKey);
        }
    } catch (BatchUpdateException b) {
        // process BatchUpdateException
    } catch (SQLException e) {
        e.printStackTrace();
    }

}

Neste ponto, quando espero obter os PKs gerados para cada INSERT, recebo essa exceção

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 22
  at oracle.jdbc.driver.T4CNumberAccessor.unmarshalOneRow(T4CNumberAccessor.java:250)
  at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:754)
  at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)
  at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1250)
  at oracle.jdbc.driver.OraclePreparedStatement.executeForRowsWithTimeout(OraclePreparedStatement.java:14264)
  at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:14379)
  at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:589)
  at dbpro.SqlHelper.insert2(SqlHelper.java:988)
  at dbpro.SqlHelper.main(SqlHelper.java:1023)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:483)
  at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)

Após a exceção: na tabela COMPANY, dois registros foram adicionados corretamente, mas eu esperava obter um ResultSet com uma linha para cada inserção executada, para que eu pudesse obter cada PK gerado.