sql

Create table example

With this example we are going to create a table in Java. In short, to create a table you should:

  • Load the JDBC driver, using the forName(String className) API method of the Class. In this example we use the MySQL JDBC driver.
  • Create a Connection to the database. Invoke the getConnection(String url, String user, String password) API method of the DriverManager to create the connection.
  • Create a Statement, using the createStatement() API method of the Connection.
  • Create a table with a column, (in the example the table name is test_table and the column name test_col and it holds String values). The executeUpdate(String sql) API method of the Statement executes the query.

Let’s take a look at the code snippet that follows:

package com.javacodegeeks.snippets.core;

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

public class CreateTable {
 
  public static void main(String[] args) {

    Connection connection = null;
    try {

  // Load the MySQL JDBC driver

  String driverName = "com.mysql.jdbc.Driver";

  Class.forName(driverName);


  // Create a connection to the database

  String serverName = "localhost";

  String schema = "test";

  String url = "jdbc:mysql://" + serverName +  "/" + schema;

  String username = "username";

  String password = "password";

  connection = DriverManager.getConnection(url, username, password);

  

  System.out.println("Successfully Connected to the database!");

  
    } catch (ClassNotFoundException e) {

  System.out.println("Could not find the database driver " + e.getMessage());
    } catch (SQLException e) {

  System.out.println("Could not connect to the database " + e.getMessage());
    }

    try {

  Statement statement = connection.createStatement();


  // Create table called test_table with a column called test_col holding String values

  statement.executeUpdate("CREATE TABLE test_table(test_col VARCHAR(254) PRIMARY KEY)");


  System.out.println("Successfully created test_table");

    } catch (SQLException e) {

  System.out.println("Could not create the database table " + e.getMessage());
    }

  }
}

Example Output:

Successfully Connected to the database!
Successfully created test_table

 
This was an example of how to create a table in Java.

Ilias Tsagklis

Ilias is a software developer turned online entrepreneur. He is co-founder and Executive Editor at Java Code Geeks.
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