Here you can find the source of getAllData(ResultSet rs)
public static Object[][] getAllData(ResultSet rs) throws SQLException
//package com.java2s; /*/*from ww w . j av a 2s. com*/ * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */ import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLException; import java.util.*; public class Main { public static Object[][] getAllData(ResultSet rs) throws SQLException { return getAllData(rs, true); } public static Object[][] getAllData(ResultSet rs, boolean closeResultSet) throws SQLException { List<Object[]> list = new ArrayList<Object[]>(); if (rs != null) { try { if (!rs.isBeforeFirst()) { throw new IllegalStateException("We need a fresh rs"); } Object[] columns = null; while (rs.next()) { if (rs.isFirst()) { ResultSetMetaData metaData = rs.getMetaData(); columns = new Object[metaData.getColumnCount()]; } for (int i = 0; i < columns.length; i++) { columns[i] = rs.getObject(i + 1); } list.add(columns); columns = new Object[columns.length]; } } catch (SQLException e) { throw e; } finally { if (closeResultSet) { rs.close(); } } } Object[][] data = new Object[list.size()][]; int index = 0; for (Object[] ss : list) { data[index++] = ss; } return data; } }