Added entities and basic select

hibernate5/src/main/java/com/baeldung/hibernate/entities/Department.java

@@ -0,0 +1,16 @@
+package com.baeldung.hibernate.entities;
+
+import java.util.List;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+
+@Entity
+public class Department {
+    @Id
+    long id;
+    String name;
+    @OneToMany(mappedBy="department")
+    List<Employee> employees;
+}

hibernate5/src/main/java/com/baeldung/hibernate/entities/Employee.java

@@ -0,0 +1,47 @@
+package com.baeldung.hibernate.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class Employee {
+    @Id
+    long id;
+    String employeeNumber;
+    String name;
+    String designation;
+    @ManyToOne    
+    Department department;
+    
+    public long getId() {
+        return id;
+    }
+    public void setId(long id) {
+        this.id = id;
+    }
+    public String getEmployeeNumber() {
+        return employeeNumber;
+    }
+    public void setEmployeeNumber(String employeeNumber) {
+        this.employeeNumber = employeeNumber;
+    }
+    public String getName() {
+        return name;
+    }
+    public void setName(String name) {
+        this.name = name;
+    }
+    public String getDesignation() {
+        return designation;
+    }
+    public void setDesignation(String designation) {
+        this.designation = designation;
+    }
+    public Department getDepartment() {
+        return department;
+    }
+    public void setDepartment(Department department) {
+        this.department = department;
+    }
+}

hibernate5/src/test/java/com/baeldung/hibernate/CustomClassIntegrationTest.java

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+package com.baeldung.hibernate;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.TimeZone;
+
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+import org.hibernate.query.Query;
+import org.junit.Before;
+import org.junit.jupiter.api.Test;
+
+class CustomClassIntegrationTest {
+
+    private Session session;
+
+    private Transaction transaction;
+
+    @Before
+    public void setUp() throws IOException {
+        session = HibernateUtil.getSessionFactory().openSession();
+        transaction = session.beginTransaction();
+        session.createNativeQuery("delete from employee").executeUpdate();
+        session.createNativeQuery("delete from department").executeUpdate();
+        transaction.commit();
+    }
+    
+    @Test
+    void whenAllEmployeesSelected_ThenObjectGraphReturned() {
+        Query query = session.createQuery("from employee");
+        List employees = query.list();
+    }
+
+}