Here you can find the source of hasColumns(Connection conn, String tableName, Collection
private static boolean hasColumns(Connection conn, String tableName, Collection<String> colNames) throws SQLException
//package com.java2s; /*/*from w w w .j a va2 s .c o m*/ * 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.util.Collection; import java.sql.Connection; import java.sql.SQLException; public class Main { private static boolean hasColumns(Connection conn, String tableName, Collection<String> colNames) throws SQLException { try (java.sql.ResultSet res = conn.getMetaData().getColumns(null, null, tableName, null)) { while (res.next()) { String colName = res.getString("COLUMN_NAME"); colNames.remove(colName.toLowerCase()); } return colNames.isEmpty(); } } }