1            entityManager.getTransaction().begin();
2		entityManager.remove(emp);
3		entityManager.getTransaction().commit();
4

1EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("persistence");
2		EntityManager entityManager = entityManagerFactory.createEntityManager();
3 
4		entityManager.getTransaction().begin();
5		Employee employee = new Employee();
6		employee.setName("Sanjay");
7 
8                // Save Entity
9		entityManager.persist(employee);
10		entityManager.getTransaction().commit();
11		System.out.println("Generated Employee ID = " + employee.getEmployeeId());
12

1<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
2	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
4             http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
5	version="2.1">
6 
7	<persistence-unit name="persistence">
8		<description>JPA Entity Manager</description>
9		<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
10 
11		<properties>
12			<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
13			<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/test" />
14			<property name="hibernate.hbm2ddl.auto" value="update" />
15			<property name="javax.persistence.jdbc.user" value="root" />
16			<property name="javax.persistence.jdbc.password" value="root" />
17			<property name="hibernate.show_sql" value="true" />
18		</properties>
19 
20	</persistence-unit>
21 
22</persistence>
23

1package com.frugalis.entity;
2 
3import javax.persistence.Column;
4import javax.persistence.Entity;
5import javax.persistence.GeneratedValue;
6import javax.persistence.GenerationType;
7import javax.persistence.Id;
8import javax.persistence.Table;
9 
10@Entity
11@Table(name = "EMPLOYEE")
12public class Employee {
13	private int employeeId;
14 
15	private String name;
16 
17	@Id
18	@Column(name = "EMPLOYEE_ID")
19	@GeneratedValue(strategy = GenerationType.IDENTITY)
20	public int getEmployeeId() {
21		return employeeId;
22	}
23 
24	public void setEmployeeId(int employeeId) {
25		this.employeeId = employeeId;
26	}
27 
28	@Column(name = "EMPLOYEE_NAME")
29	public String getName() {
30		return name;
31	}
32 
33	public void setName(String name) {
34		this.name = name;
35	}
36 
37	@Override
38	public String toString() {
39		return "Employee [ID=" + employeeId + ", Name=" + name + "]";
40	}
41 
42}
43