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  • H2 基本知识2

    首先下载H2 For Windows installer h2下载链接

    安装后在C:\Program Files\H2\src\test\org\h2\samples(默认安装) 文件夹下有很多sample 。

    看看sample 代码,很多就会了,

    先来个helloworld

    /*
     * Copyright 2004-2010 H2 Group. Multiple-Licensed under the H2 License, Version
     * 1.0, and under the Eclipse Public License, Version 1.0
     * (http://h2database.com/html/license.html). Initial Developer: H2 Group
     */
    package org.h2.samples;

    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.ResultSet;
    import java.sql.Statement;
    import org.h2.tools.DeleteDbFiles;

    /**
     * A very simple class that shows how to load the driver, create a database,
     * create a table, and insert some data.
     */
    public class HelloWorld {

        /**
         * Called when ran from command line.
         *
         * @param args ignored
         */
        public static void main(String... args) throws Exception {
            // delete the database named 'test' in the user home directory
            DeleteDbFiles.execute("~", "test", true);

            Class.forName("org.h2.Driver");
            Connection conn = DriverManager.getConnection("jdbc:h2:~/test");
            Statement stat = conn.createStatement();

            // this line would initialize the database
            // from the SQL script file 'init.sql'
            // stat.execute("runscript from 'init.sql'");

            stat.execute("create table test(id int primary key, name varchar(255))");
            stat.execute("insert into test values(1, 'Hello')");
            ResultSet rs;
            rs = stat.executeQuery("select * from test");
            while (rs.next()) {
                System.out.println(rs.getString("name"));
            }
            conn.close();
        }

    }

     

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  • 原文地址:https://www.cnblogs.com/likwo/p/1755564.html
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