Continuing the previous example How do I get object from database in Hibernate?, we now add the delete function in our LabelManager class.

package org.kodejava.example.hibernate.app;

import org.hibernate.Query;
import org.hibernate.Session;
import org.kodejava.example.hibernate.model.Label;

import java.util.List;

public class LabelManager {
    public void deleteLabel(Long id) {
        // Load the object to be deleted
        Label label = getLabel(id);

        // We get the current session and delete the Label object from 
        // database.
        Session session = 
            SessionFactoryHelper.getSessionFactory().getCurrentSession();
        session.beginTransaction();
        session.delete(label);
        session.getTransaction().commit();
    }
}

package org.kodejava.example.hibernate.app;

import org.kodejava.example.hibernate.model.Label;

import java.util.Date;

public class DeleteDemo {
    public static void main(String[] args) {
        LabelManager manager = new LabelManager();

        // Creates a Label object we are going to stored in the database.
        // We set the name and created date information.
        Label label = new Label();
        label.setName("Sony Music");
        label.setCreated(new Date());

        // Call the LabelManager saveLabel method.
        manager.saveLabel(label);

        // Read the object back from database.
        label = manager.getLabel(label.getId());
        System.out.println("Label = " + label);

        manager.deleteLabel(label.getId());
    }
}

Maven Dependencies

<dependencies>
    <!--https://search.maven.org/remotecontent?filepath=org/hibernate/hibernate-core/5.4.1.Final/hibernate-core-5.4.1.Final.jar-->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>5.4.1.Final</version>
    </dependency>
    <!--https://search.maven.org/remotecontent?filepath=org/hibernate/hibernate-ehcache/5.4.1.Final/hibernate-ehcache-5.4.1.Final.jar-->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-ehcache</artifactId>
        <version>5.4.1.Final</version>
    </dependency>
    <!--https://search.maven.org/remotecontent?filepath=mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.47</version>
    </dependency>
</dependencies>

• Author
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Wayan

Founder at Kode Java Org

I am a programmer, a runner, a recreational diver, currently live in the island of Bali, Indonesia. Mostly programming in Java, Spring Framework, Hibernate / JPA. If these posts help, you can support me, buy me a cup of coffee or tea. Thank you 🥳

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