The code below demonstrates on how to delete some records from database using the JdbcTemplate.

package org.kodejava.spring.jdbc;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

import javax.sql.DataSource;

public class DeleteDemo {
    public static final String DRIVER = "com.mysql.cj.jdbc.Driver";
    public static final String URL = "jdbc:mysql://localhost/musicdb";
    public static final String USERNAME = "root";
    public static final String PASSWORD = "";

    public static final String QUERY = "DELETE FROM record WHERE id = ?";

    private final DataSource dataSource;

    public DeleteDemo(DataSource dataSource) {
        this.dataSource = dataSource;
    }

    /**
     * Returns a DataSource object.
     *
     * @return a DataSource.
     */
    public static DataSource getDataSource() {
        DriverManagerDataSource ds = new DriverManagerDataSource();
        ds.setDriverClassName(DeleteDemo.DRIVER);
        ds.setUrl(DeleteDemo.URL);
        ds.setUsername(DeleteDemo.USERNAME);
        ds.setPassword(DeleteDemo.PASSWORD);
        return ds;
    }

    public static void main(String[] args) {
        DataSource ds = getDataSource();
        DeleteDemo demo = new DeleteDemo(ds);

        Long id = 1L;
        demo.deleteRecord(id);
    }

    public void deleteRecord(Long id) {
        // Creates an instance of JdbcTemplate and supply a data
        // source object.
        JdbcTemplate template = new JdbcTemplate(this.dataSource);

        // Delete a record from database where the record
        // id matches with the specified parameter.
        Object[] params = {id};
        int rows = template.update(DeleteDemo.QUERY, params);
        System.out.println(rows + " row(s) deleted.");
    }
}

Maven Dependencies

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>6.0.6</version>
    </dependency>
    <dependency>
        <groupId>com.mysql</groupId>
        <artifactId>mysql-connector-j</artifactId>
        <version>8.0.33</version>
    </dependency>
</dependencies>

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Wayan

Founder at Kode Java Org

A programmer, recreational runner, live in the island of Bali, Indonesia. Programming in Java, Spring, Hibernate / JPA. You can support me working on this project, buy me a cup of coffee ☕ every little bit helps, thank you 🙏

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