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JDBC Statement example to Delete a Record

drop table
 
Here is an example to show you how to delete a record from a table via JDBC statement.
 
To issue a delete statement, calls the Statement.executeUpdate() method as shown below :
 

Statement statement = connection.createStatement();
// execute delete  SQL stetement
statement.executeUpdate(deleteTableQuery);

 
Full example…
File: JDBCStatementDeleteExample.java
 

package com.simplecode.jdbc;

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

public class JDBCStatementDeleteExample  
{

private static final String dbDriver = "oracle.jdbc.driver.OracleDriver";
private static String serverName = "127.0.0.1";
private static String portNumber = "1521";
private static String sid = "XE";
private static final String dbUrl ="jdbc:oracle:thin:@"+serverName+":"+ portNumber+":"+sid;
private static final String dbUser = "system";
private static final String dbPassword = "admin";


	public static void main(String[] argc) 
	{
		try 
		{
			deleteRecordFromEmployeeTable();
		}
		catch (SQLException e) 
		{
			System.out.println(e.getMessage());
		}
	}

	private static void deleteRecordFromEmployeeTable() throws SQLException 
	{
	Connection connection = null;
	Statement statement = null;

	String deleteTableQuery = "DELETE EMPLOYEE WHERE USER_ID = 1000";

		try 
		{
			connection = getDBConnection();
			statement = connection.createStatement();

			// execute delete SQL statement
			statement.executeUpdate(deleteTableQuery);
			System.out.println("Record is deleted from EMPLOYEE table!");

		}
		catch (SQLException e) 
		{
			System.err.println(e.getMessage());

		}
		finally 
		{
			if (statement != null) 
			{
				statement.close();
			}

			if (connection != null) 
			{
				connection.close();
			}
		}
	}

	private static Connection getDBConnection() 
	{
		Connection dbConnection = null;
		try 
		{
			Class.forName(dbDriver);
		}
		catch (ClassNotFoundException e) 
		{
			System.err.println(e.getMessage());
		}

		try 
		{
		dbConnection = DriverManager.getConnection(dbUrl, dbUser, dbPassword);
		return dbConnection;
		}
		catch (SQLException e) 
		{
			System.err.println(e.getMessage());
		}

	return dbConnection;
	}
}

 
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Am currently working as a Struts 2 Developer in a reputed IT Organisations. I can help you with teaching Core java and Struts 2. Follow me on Facebook or Google Plus. If you like my tutorials, consider making a donation to this charity, thanks.