How to Insert Data in MySQL Table using Java

In this article, we will learn how to insert a record in a MySQL database table using the Java JDBC API. We will use the PreparedStatement interface because the PreparedStatement interface improves performance like SQL statement is precompiled and stored in a PreparedStatement object. 

JDBC PreparedStatement - Insert a Record Example

In this example, we will use the users database table. Before inserting a record into a database, we need to first create a users table in a database. Here is the article JDBC Statement Create Table Example will create a users table in a mysql_database database.

Here is the Java program to insert data into MySQL database table:

package com.javaguides.jdbc.preparestatement.examples;

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

/**
 * Insert PrepareStatement JDBC Example
 * 
 * @author Ramesh Fadatare
 *
 */
public class InsertPStatementExample {
    private static final String INSERT_USERS_SQL = "INSERT INTO users" +
        "  (id, name, email, country, password) VALUES " +
        " (?, ?, ?, ?, ?);";

    public static void main(String[] argv) throws SQLException {
        InsertPStatementExample createTableExample = new InsertPStatementExample();
        createTableExample.insertRecord();
    }

    public void insertRecord() throws SQLException {
        System.out.println(INSERT_USERS_SQL);
        // Step 1: Establishing a Connection
        try (Connection connection = DriverManager
            .getConnection("jdbc:mysql://localhost:3306/mysql_database?useSSL=false", "root", "root");

            // Step 2:Create a statement using connection object
            PreparedStatement preparedStatement = connection.prepareStatement(INSERT_USERS_SQL)) {
            preparedStatement.setInt(1, 1);
            preparedStatement.setString(2, "Tony");
            preparedStatement.setString(3, "tony@gmail.com");
            preparedStatement.setString(4, "US");
            preparedStatement.setString(5, "secret");

            System.out.println(preparedStatement);
            // Step 3: Execute the query or update query
            preparedStatement.executeUpdate();
        } catch (SQLException e) {

            // print SQL exception information
            printSQLException(e);
        }

        // Step 4: try-with-resource statement will auto close the connection.
    }

    public static void printSQLException(SQLException ex) {
        for (Throwable e: ex) {
            if (e instanceof SQLException) {
                e.printStackTrace(System.err);
                System.err.println("SQLState: " + ((SQLException) e).getSQLState());
                System.err.println("Error Code: " + ((SQLException) e).getErrorCode());
                System.err.println("Message: " + e.getMessage());
                Throwable t = ex.getCause();
                while (t != null) {
                    System.out.println("Cause: " + t);
                    t = t.getCause();
                }
            }
        }
    }
}

Output

In the above example, we are connecting to the MySQL database with the below line of code:

 try (Connection connection = DriverManager
            .getConnection("jdbc:mysql://localhost:3306/mysql_database?useSSL=false", "root", "root");

References

https://www.javaguides.net/2018/10/jdbc-preparedstatement-insert-record-example.html