Here you can find the source of tableExists(Connection conn, String tableName)
private static boolean tableExists(Connection conn, String tableName)
//package com.java2s; /**/*from w w w .j a va2s . c om*/ * Copyright ? 2016-2018 The Thingsboard Authors * * Licensed 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.*; public class Main { private static boolean tableExists(Connection conn, String tableName) { try (Statement stmt = conn.createStatement()) { stmt.executeQuery("select * from " + tableName + " where 1=0"); return true; } catch (Exception e) { return false; } } }