以批量建立表和記錄為例，彙總JDBC操作多種資料庫程式碼。
下述程式碼實現的功能是：往資料庫中建立10000張表，每50張表插入記錄。
1、JDBC連線操作Oracle資料庫

package demo;

import org.apache.commons.lang.RandomStringUtils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.Date;

public class OracleDemo{
    public
 
 static void main(String[] args) {
        Connection c = null;
        // 註冊驅動
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        try {
            c = DriverManager.getConnection(
 

                    "jdbc:oracle:thin:@ip:port:xe", "userName", "password");
            c.setAutoCommit(false);
            PreparedStatement ps;
            System.out.println("開始插入資料-" + new Date());
            Long beginTime = System.currentTimeMillis();
            for (int i = 1; i <= 10000; i++
 
) {
                // 建立表
                ps = c.prepareStatement("create table CLOUD_000" + i + "(" +
                        "C_ID NUMBER PRIMARY KEY, " +
                        "C_NAME VARCHAR(255)" +
                        ")");
                ps.execute();
                // 插入資料
                if (i % 50 == 0) {
                    String sql = "insert into CLOUD_00" + i + " values (?, ?)";
                    ps = c.prepareStatement(sql);
                    for (int y = 10001; y <= 11001; y++) {
                        ps.setInt(1, y);
                        ps.setString(2, RandomStringUtils.randomAlphanumeric(20));
                        ps.addBatch();
                        if (y == 11001) {
                            ps.executeBatch();
                            c.commit();
                            ps.clearBatch();
                            System.out.println("資料總數：" + (i * 100));
                        }
                    }
                    ps.executeUpdate();
                }
                System.out.println("建立表數目：" + i);
                ps.close();
            }
            System.out.println("插入完成-" + new Date());
            System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
        } catch(Exception e) {
            e.getStackTrace();
        }
    }
}

2、JDBC連線操作MySQL資料庫

package demo;

import org.apache.commons.lang.RandomStringUtils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.Date;

public class MySQLDemo{
    public static void main(String[] args) {
        Connection c = null;
        // 註冊驅動
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        try {
            c = DriverManager.getConnection(
                    "jdbc:mysql://ip:port/database", "userName", "password");
            PreparedStatement ps;
            System.out.println("開始插入資料-" + new Date());
            Long beginTime = System.currentTimeMillis();
            for (int i = 1; i <= 10000; i++) {
                ps = c.prepareStatement("create table cloud_000" + i + "(" +
                        "c_id int primary key , " +
                        "c_name VARCHAR(255)" +
                        ")");
                ps.execute();
                if (i % 50 == 0) {
                    ps = c.prepareStatement("insert into cloud_000" + i + " values (?, ?)");
                    ps.setInt(1, i);
                    ps.setString(2, RandomStringUtils.randomAlphanumeric(20));
                    ps.executeUpdate();
                }
                System.out.println("建立表數目：" + i);
                ps.close();
            }
            System.out.println("插入完成-" + new Date());
            System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
        } catch(Exception e) {
            e.getStackTrace();
        }
    }
}

3、JDBC連線操作SQLServer資料庫

package demo;

import org.apache.commons.lang.RandomStringUtils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.Date;

public class MSSQLDemo{
    public static void main(String[] args) {
        Connection c = null;
        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        try {
            c = DriverManager.getConnection(
                    "jdbc:sqlserver://ip:port;DatabaseName=database;", "username", "password");
            PreparedStatement ps;
            System.out.println("開始插入資料-" + new Date());
            Long beginTime = System.currentTimeMillis();
            for (int i = 1; i <= 10000; i++) {
                ps = c.prepareStatement("create table test.cloud_000" + i + "(" +
                        "c_id int primary key , " +
                        "c_name VARCHAR(255)" +
                        ")");
                ps.execute();
                if (i % 50 == 0) {
                    ps = c.prepareStatement("insert into test.cloud_000" + i + " values (?, ?)");
                    ps.setInt(1, i);
                    ps.setString(2, RandomStringUtils.randomAlphanumeric(20));
                    ps.executeUpdate();
                    System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
                }
                System.out.println("建立表數目：" + i);
                ps.close();
            }
            System.out.println("插入完成-" + new Date());
            System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
        } catch (Exception e) {
            e.getStackTrace();
            System.out.println(e.getMessage());
        }
    }
}

4、JDBC連線操作PostgreSQL資料庫

package demo;

import org.apache.commons.lang.RandomStringUtils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.Date;

public class PostgreDemo {
    public static void main(String[] args) {
        Connection c = null;
        try {
            Class.forName("org.postgresql.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        try {
            c = DriverManager.getConnection(
                    "jdbc:postgresql://ip:port/database", "username", "password");
            PreparedStatement ps;
            System.out.println("開始插入資料-" + new Date());
            Long beginTime = System.currentTimeMillis();
            for (int i = 1; i <= 10000; i++) {
                ps = c.prepareStatement("create table test.cloud_000" + i + "(" +
                        "c_id int primary key , " +
                        "c_name VARCHAR(255)" +
                        ")");
                ps.execute();
                if (i % 50 == 0) {
                    ps = c.prepareStatement("insert into test.cloud_000" + i + " values (?, ?)");
                    ps.setInt(1, i);
                    ps.setString(2, RandomStringUtils.randomAlphanumeric(20));
                    ps.executeUpdate();
                    System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
                }
                System.out.println("建立表數目：" + i);
                ps.close();
            }
            System.out.println("插入完成-" + new Date());
            System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
        } catch (Exception e) {
            e.getStackTrace();
            System.out.println(e.getMessage());
        }
    }
}

4、Java連線操作Mongo資料庫

package demo;

import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.Document;

import java.util.Date;

public class MongoDemo {
    public static void main(String[] args) {
        MongoClientURI uri = new MongoClientURI(
                "mongodb://userName:[email protected]:port/?authSource=admin&database=db");
        // 建立連線
        MongoClient client = new MongoClient(uri);
        // 連線資料庫
        MongoDatabase database = client.getDatabase("db");
        System.out.println("開始插入資料-" + new Date());
        Long beginTime = System.currentTimeMillis();
        for (int i = 1; i <= 10000; i++) {
            // 建立集合
            database.createCollection("cloud_000" + i);
            if (i % 50 == 0) {
                MongoCollection<Document> collection = database.getCollection("cloud_000" + i);
                // 生成資料
                Document document = new Document("stuId", "1").append("stuName", "Jack");
                // 插入資料
                collection.insertOne(document);
                System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
            }
            System.out.println("建立表數目：" + i);

        }
        System.out.println("插入完成-" + new Date());
        System.out.println("耗時:" + ((beginTime - System.currentTimeMillis()) / 1000) + "秒");
    }
}