JDBC - Create Database

This tutorial provides examples on how to create a Database and Schema using JDBC application. Before executing the following example, make sure you have the following in place −

You should have admin privilege to create a database in the given schema. To execute the following example, you need to replace the username and password with your actual user name and password.
Your MySQL or whatever database is up and running.

Required Steps

The following steps are required to create a new Database using JDBC application −

Import the packages − Requires that you include the packages containing the JDBC classes needed for database programming. Most often, using import java.sql.* will suffice.
Open a connection − Requires using the DriverManager.getConnection() method to create a Connection object, which represents a physical connection with the database server.

To create a new database, you need not give any database name while preparing database URL as mentioned in the below example.
Execute a query − Requires using an object of type Statement for building and submitting an SQL statement to the database.
Clean up the environment . try with resources automatically closes the resources.

Example: Creating a Database

In this example, we've three static strings containing a dababase connection url, username, password. Now using DriverManager.getConnection() method, we've prepared a database connection. Once connection is prepared, we've created a Statement object using connection.createStatement() method. Then using statement.executeUpdate(), we've run the query to create a new database named Students and printed the success message.

In case of any exception while creating the database, a catch block handled SQLException and printed the stack trace.

Copy and paste the following example in JDBCExample.java, compile and run as follows −

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCExample {
   static final String DB_URL = "jdbc:mysql://localhost/";
   static final String USER = "guest";
   static final String PASS = "guest123";

   public static void main(String[] args) {
      // Open a connection
      try(Connection conn = DriverManager.getConnection(DB_URL, USER, PASS);
         Statement stmt = conn.createStatement();
      ) {		      
         String sql = "CREATE DATABASE STUDENTS";
         stmt.executeUpdate(sql);
         System.out.println("Database created successfully...");   	  
      } catch (SQLException e) {
         e.printStackTrace();
      } 
   }
}

Output

Now let us compile the above example as follows −

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

When you run JDBCExample, it produces the following result −

C:\>java JDBCExample
Database created successfully...
C:\>

As we've successfully created the database, on similar lines, we can create the schema as well as shown in example below:

Example: Creating a Schema

In this example, we've three static strings containing a dababase connection url, username, password. Now using DriverManager.getConnection() method, we've prepared a database connection. Once connection is prepared, we've created a Statement object using connection.createStatement() method. Then using statement.executeUpdate(), we've run the query to create a new schema named Sample_db1 and printed the success message.

In case of any exception while creating the database, a catch block handled SQLException and printed the stack trace.

Copy and paste the following example in JDBCExample.java, compile and run as follows −

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCExample {
   static final String DB_URL = "jdbc:mysql://localhost/";
   static final String USER = "guest";
   static final String PASS = "guest123";

   public static void main(String[] args) {
      // Open a connection
      try(Connection conn = DriverManager.getConnection(DB_URL, USER, PASS);
         Statement stmt = conn.createStatement();
      ) {		      
         String sql = "CREATE SCHEMA Sample_db1";
         stmt.executeUpdate(sql);
         System.out.println("Schema created successfully...");   	  
      } catch (SQLException e) {
         e.printStackTrace();
      } 
   }
}

Output

Now let us compile the above example as follows −

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

When you run JDBCExample, it produces the following result −

C:\>java JDBCExample
Schema created successfully...
C:\>

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