For More explanation watch video
For More information watch below video
step :
create maven project
step 2: edit pom.xml
add maven compiler plugin
add hibernate-core, lombok, mysql-connector-java maven dependencies
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.test</groupId> <artifactId>Hibernate6CRUD</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>Hibernate6CRUD</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.9</maven.compiler.source> <maven.compiler.target>1.9</maven.compiler.target> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/org.hibernate.orm/hibernate-core --> <dependency> <groupId>org.hibernate.orm</groupId> <artifactId>hibernate-core</artifactId> <version>6.2.0.Final</version> </dependency> <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok --> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.24</version> <scope>provided</scope> </dependency> <!-- https://mvnrepository.com/artifact/com.mysql/mysql-connector-j --> <dependency> <groupId>com.mysql</groupId> <artifactId>mysql-connector-j</artifactId> <version>8.0.32</version> </dependency> </dependencies></project>step 3: Directory Structure
step 4 : Create entity
Student.java
package com.test.entity;import jakarta.persistence.Entity;import jakarta.persistence.GeneratedValue;import jakarta.persistence.GenerationType;import jakarta.persistence.Id;import jakarta.persistence.Table;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;@Data@AllArgsConstructor@NoArgsConstructor@Entity@Table(name = "sttab")public class Student { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer sid; private String sname; private String sadd;}step5 : HibernateUtil.java
package com.test.util;import java.util.Properties;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;import org.hibernate.cfg.Environment;import com.test.entity.Student;public class HibernateUtil { static SessionFactory factory = null; static { Configuration cfg = new Configuration(); Properties props = new Properties(); props.put(Environment.URL, "jdbc:mysql://localhost:3306/new"); props.put(Environment.USER, "root"); props.put(Environment.PASS, "root"); props.put(Environment.SHOW_SQL, true); props.put(Environment.FORMAT_SQL, true); props.put(Environment.HBM2DDL_AUTO, "update"); cfg.setProperties(props); cfg.addAnnotatedClass(Student.class); factory = cfg.buildSessionFactory(); } public static SessionFactory getSessionFactory() { return factory; } public static Session getSession() { return factory.openSession(); }}step 6: Insert.java
package com.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import com.test.entity.Student;import com.test.util.HibernateUtil;public class Insert { public static void main(String[] args) { SessionFactory factory = HibernateUtil.getSessionFactory(); Session ses = HibernateUtil.getSession(); try(factory;ses){ //begin the transaction ses.beginTransaction(); //create student objs Student st1 = new Student("sam","mumbai"); Student st2 = new Student("jhon","pune"); Student st3 = new Student("brock","nagpur"); //save ses.persist(st1); ses.persist(st2); ses.persist(st3); //commit transaction ses.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); } }}exceute Insert.java
you will find output in console as below
table will be created in mysql new schema as below
step 7 : Retrive.java
to retrive student by id
package com.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import com.test.entity.Student;import com.test.util.HibernateUtil;public class Retrive { public static void main(String[] args) { SessionFactory factory = HibernateUtil.getSessionFactory(); Session ses = HibernateUtil.getSession(); try(factory;ses){ Student st = ses.get(Student.class, 1); System.out.println("emp with id 1 info "+st); }catch(Exception e) { e.printStackTrace(); } }}
step 8 : RetriveAll.java
package com.test;import java.util.List;import org.hibernate.Session;import org.hibernate.SessionFactory;import com.test.entity.Student;import com.test.util.HibernateUtil;public class RetriveAll { public static void main(String[] args) { SessionFactory factory = HibernateUtil.getSessionFactory(); Session ses = HibernateUtil.getSession(); try(factory;ses){ //select * from sttab List<Student> list= ses.createQuery("from Student",Student.class).getResultList(); list.forEach(System.out::println); }catch(Exception e) { e.printStackTrace(); } }}console output
step 9 : Update.java
updating one record
package com.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import com.test.entity.Student;import com.test.util.HibernateUtil;public class Update { public static void main(String[] args) { SessionFactory factory = HibernateUtil.getSessionFactory(); Session ses = HibernateUtil.getSession(); try(factory;ses){ //begin treansaction ses.beginTransaction(); Student st = ses.get(Student.class, 1); st.setSadd("Delhi"); ses.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); } }}before update
after update
console output
Step 10 : Delete.java
package com.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import com.test.entity.Student;import com.test.util.HibernateUtil;public class Delete { public static void main(String[] args) { SessionFactory factory = HibernateUtil.getSessionFactory(); Session ses = HibernateUtil.getSession(); try(factory;ses){ //begin transaction ses.beginTransaction(); //get the student Student st = ses.get(Student.class, 3); //delete student ses.remove(st); //commit transaction ses.getTransaction().commit(); }catch(Exception e) { e.printStackTrace(); } }}
table before delete
after deletion
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