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:>