JDBC Statement updates a record example

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The JDBC statement is used to execute queries against the database. Let us study JDBC Statement by update a record example.

Example:

JDBCTest.java

import java.sql.Connection;
import java.sql.Statement;
import com.w3schools.util.JDBCUtil;
 
/**
 * This class is used to update a record in DB table.
 * @author w3schools
 */
public class JDBCTest {
	public static void main(String args[]){
		Connection conn = null;
		Statement statement = null;
 
		String query = "update EMPLOYEE set " +
		"NAME = 'Abhishek' " + 
		"where EMPLOYEE_ID = 1 ";
 
		try{			
			//get connection
			conn = JDBCUtil.getConnection();
 
			//create statement
			statement = conn.createStatement();
 
			//execute query
			statement.executeUpdate(query);
 
			//close connection
			statement.close();
			conn.close();
 
		      System.out.println("Record updated successfully.");
		}catch(Exception e){
			e.printStackTrace();
		}
	}	
}

JDBCUtil.java

import java.sql.Connection;
import java.sql.DriverManager;
 
/**
 * This is a utility class for JDBC connection.
 * @author w3schools
 */
public class JDBCUtil {
	//JDBC and database properties.
	private static final String DB_DRIVER = 
		           "oracle.jdbc.driver.OracleDriver";
	private static final String DB_URL = 
		        "jdbc:oracle:thin:@localhost:1521:XE";
	private static final String DB_USERNAME = "system";
	private static final String DB_PASSWORD = "oracle";
 
	public static Connection getConnection(){
		Connection conn = null;
		try{
			//Register the JDBC driver
			Class.forName(DB_DRIVER);
 
			//Open the connection
			conn = DriverManager.
			getConnection(DB_URL, DB_USERNAME, DB_PASSWORD);
 
			if(conn != null){
			   System.out.println("Successfully connected.");
			}else{
			   System.out.println("Failed to connect.");
			}
		}catch(Exception e){
			e.printStackTrace();
		}
		return conn;
	}	
}

Output:

Successfully connected.
Record updated successfully.

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