JDBC - Drop Database Example

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This chapter provides an example on how to drop an existing Database using JDBC application. Before executing the following example, make sure you have the following in place −

• To execute the following example you need to replace the username and password with your actual user name and password.

• Your MySQL is up and running.

NOTE: This is a serious operation and you have to make a firm decision before proceeding to delete a database because everything you have in your database would be lost.

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 a database server.

  Deleting a database does not require database name to be in your database URL. Following example would delete STUDENTS database.

• Execute a query − Requires using an object of type Statement for building and submitting an SQL statement to delete the database.

• Clean up the environment − try with resources automatically closes the resources.

Sample Code

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 = "DROP DATABASE STUDENTS";
         stmt.executeUpdate(sql);
         System.out.println("Database dropped successfully...");   	  
      } catch (SQLException e) {
         e.printStackTrace();
      } 
   }
}

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 dropped successfully...
C:\>