How to delete a record using JDBC PreparedStatement
JDBC
PrepareStatement
delete
record
delete record with jdbc
Following the previous tutorials on JDBC is time to see how to delete a record using PreparedStatement. For more details check the references section.
Example
package com.admfactory.db;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class JDBCDeleteRecord {
private static Connection connect() {
try {
Class.forName("com.mysql.jdbc.Driver");
return DriverManager.getConnection("jdbc:mysql://localhost:3306/admfactory.com", "root", "");
} catch (Exception e) {
System.out.println("Failed to connect to DB.");
e.printStackTrace();
return null;
}
}
private static void deleteData(long id) throws Exception {
PreparedStatement statement = null;
try {
String query = "DELETE FROM `user` WHERE `id`=?;";
Connection connection = connect();
statement = connection.prepareStatement(query);
statement.setLong(1, id);
int r = statement.executeUpdate();
/** Check if the user was successfully deleted. */
if (r > 0) {
System.out.println("User [" + id + "] was successfully deleted.");
} else {
System.out.println("Failed to delete user id " + id);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (statement != null) {
statement.close();
}
}
}
public static void main(String[] args) {
try {
System.out.println("Delete one record.");
/** Get the connection. */
Connection connection = connect();
if (connection != null) {
/** delete some data. */
deleteData(1);
System.out.println("Record deleted successfully!");
/** Close the connection. */
connection.close();
}
} catch (Exception e) {
System.out.println("Something went wrong.");
}
}
}
Output
Delete one record.
User [1] was successfully deleted.
Record deleted successfully!
