My Sql + Spring Boot JPA - One to many, many to one example

Employee.java

package com.javaxp.model;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

@Entity
@Table(name = "employee")
public class Employee {

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column(name = "employee_id")
	private Long employeeId;

	@Column(name = "employee_name")
	private String employeeName;

	@ManyToOne
	@JoinColumn(name = "department_id", nullable = false)
	private Department department;

	public Long getEmployeeId() {
		return employeeId;
	}

	public void setEmployeeId(Long employeeId) {
		this.employeeId = employeeId;
	}

	public String getEmployeeName() {
		return employeeName;
	}

	public void setEmployeeName(String employeeName) {
		this.employeeName = employeeName;
	}

	public Department getDepartment() {
		return department;
	}

	public void setDepartment(Department department) {
		this.department = department;
	}

	@Override
	public String toString() {
		return "Employee [employeeId=" + employeeId + ", employeeName=" + employeeName + ", department=" + department
				+ "]";
	}	
}