JDBC Create Database

This tutorial provides an example of how to create a database using a JDBC application. Before executing the following example, please ensure that you have the following conditions:

• You should have administrative privileges to create a database in the given schema. To execute the following example, you need to replaceUsernameAndPasswordReplace with the actual username and password.

• Your MySQL or any database you are using has already started and is running.

Necessary steps

To create a new database using a JDBC application, you need to follow the following steps-

• Import package:It requires you to include the software package that contains the JDBC classes required for database programming. Typically, using import java.sql.* is enough.

• Register JDBC driver: It requires you to initialize the driver so that you can open a communication channel with the database.

• Establish connection:It is necessary to useDriverManager.getConnection()A method to create a Connection object representing a physical connection to the database server. To create a new database, no database name needs to be provided when preparing the database URL, as shown in the following example.

• Execute query: It is necessary to use an object of the Statement type to construct SQL statements and submit them to the database.

• Cleanup:It is necessary to explicitly close all database resources instead of relying on JVM's garbage collection.

Example code

Copy and paste the following example into JDBCExample.java, as follows compile and run:

//Step1Import the required software packages
import java.sql.*;
public class JDBCExample {
　　　//　JDBC driver name and database URL
　　　static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";　　
　　　static final String DB_URL = "jdbc:mysql://localhost/";
　　　//　　Database credentials
　　　static final String USER = "username";
　　　static final String PASS = "password";
　　　
　　　public static void main(String[] args) {
　　　Connection conn = null;
　　　Statement stmt = null;
　　　try{
　　　　　　//Step2Register JDBC driver
　　　　　　Class.forName("com.mysql.jdbc.Driver");
　　　　　　//Step3Establish connection
　　　　　　System.out.println("Connecting to database...");
　　　　　　conn = DriverManager.getConnection(DB_URL, USER, PASS);
　　　　　　//Step4Execute query
　　　　　　System.out.println("Creating database...");
　　　　　　stmt = conn.createStatement();
　　　　　　
　　　　　　String sql = "CREATE DATABASE STUDENTS";
　　　　　　stmt.executeUpdate(sql);
　　　　　　System.out.println("Database created successfully...");
　　　catch(SQLException se){
　　　　　　//Handle JDBC error
　　　　　　se.printStackTrace();
　　　Handle Class.forName error
　　　　　　//e.printStackTrace();
　　　　　　finally{
　　　}
　　　　　　//Used for closing resources
　　　　　　try{
　　　　　　　　　stmt.close();
　　　　　　　　　　　　catch(SQLException se
　　　　　　}2){
　　　　　　
　　　　　　}
　　　　　　try{
　　　　　　　　　if(conn!=null)
　　　　　　　　　　　　conn.close();
　　　　　　catch(SQLException se){
　　　　　　　　　se.printStackTrace();
　　　　　　}
　　　}//End try
　　　System.out.println("Goodbye!");
}//End main
}//End JDBCExample

Now, let's compile the above example as follows:

C:\>javac JDBCExample.java
C:\>

RuntimeJDBCExampleIt will produce the following results-

C:\>java JDBCExample
Connecting to database...
Creating database...
Database created successfully...
Goodbye!
C:\>