String query="SELECT e FROM Employee e WHERE e.address.address1 IN ('NY', 'CA')";

SELECT t1.EMPLOYEE_ID, t1.EMAIL, t1.FIRST_NAME, t1.HIRE_DATE, t1.JOB_ID, t1.LAST_NAME, t1.SALARY, t1.DEPARTMENT_ID FROM ADDRESS t0, EMPLOYEES t1 WHERE ((t0.ADDRESS1 IN (?, ?)) AND (t0.EMPLOYEE_ID = t1.EMPLOYEE_ID))
	bind => [NY, CA]
SELECT DEPARTMENT_ID, DEPARTMENT_NAME, LOCATION_ID FROM DEPARTMENTS WHERE (DEPARTMENT_ID = ?)
	bind => [60]

SELECT t1.id, t1.ADDRESS1, t1.ADDRESS2, t1.EMPLOYEE_ID, t0.EMPLOYEE_ID, t0.EMAIL, t0.FIRST_NAME, t0.HIRE_DATE, t0.JOB_ID, t0.LAST_NAME, t0.SALARY, t0.DEPARTMENT_ID FROM ADDRESS t1 LEFT OUTER JOIN EMPLOYEES t0 ON (t0.EMPLOYEE_ID = t1.EMPLOYEE_ID) WHERE (t1.EMPLOYEE_ID = ?)
	bind => [104]

@Entity
@Table(name="EMPLOYEES")
public class Employee {
	
	@Id
	@Column(name="EMPLOYEE_ID")
	@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "employee_sequence")
	@SequenceGenerator(name = "employee_sequence", sequenceName = "EMPLOYEES_SEQ", allocationSize = 1)
	private int employeeId;
	
	@Column(name="FIRST_NAME")
	private String firstName;
	
	@Column(name="LAST_NAME")
	private String lastName;
	
	private String email;
	private int salary;
	
	@ManyToOne(fetch=FetchType.LAZY)
	@JoinColumn(name="DEPARTMENT_ID")
	private Dept dept;
	
	
	@OneToOne(mappedBy="employee",fetch=FetchType.LAZY)
	private Address address;
	
	
	public Address getAddress() {
		return address;
	}
	public void setAddress(Address address) {
		this.address = address;
	}
	public Collection<Project> getProjects() {
		return projects;
	}
	public void setProjects(Collection<Project> projects) {
		this.projects = projects;
	}
	public int getEmployeeId() {
		return employeeId;
	}
	public void setEmployeeId(int employeeId) {
		this.employeeId = employeeId;
	}
	public String getFirstName() {
		return firstName;
	}
	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}
	public String getLastName() {
		return lastName;
	}
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public int getSalary() {
		return salary;
	}
	public void setSalary(int salary) {
		this.salary = salary;
	}
	public Dept getDept() {
		return dept;
	}
	public void setDept(Dept dept) {
		this.dept = dept;
	}

	
}

Department.java
***************

@Entity
@Table(name="DEPARTMENTS")
public class Dept {
	
		@Id
		@Column(name="DEPARTMENT_ID")
		@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "departments_sequence")
		@SequenceGenerator(name = "departments_sequence", sequenceName = "DEPARTMENTS_SEQ", allocationSize = 1)
		private int deptno;
		
		@Column(name="DEPARTMENT_NAME")
		private String dname;
		
		@Column(name="LOCATION_ID")
		private int loc;
		
		@OneToMany(mappedBy ="dept",cascade=CascadeType.ALL,fetch=FetchType.LAZY)
		private List<Employee> employees = new ArrayList<Employee>();
		
		public int getDeptno() {
			return deptno;
		}

		public void setDeptno(int deptno) {
			this.deptno = deptno;
		}

		public String getDname() {
			return dname;
		}

		public void setDname(String dname) {
			this.dname = dname;
		}

		public int getLoc() {
			return loc;
		}

		public void setLoc(int loc) {
			this.loc = loc;
		}

		public List<Employee> getEmployees() {
			return employees;
		}

		public void setEmployees(List<Employee> employees) {
			this.employees = employees;
		}

		
		
		
}
Address.java
************

@Entity
@Table(name="ADDRESS")
public class Address {

@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "address_sequence")
@SequenceGenerator(name = "address_sequence", sequenceName = "ADDRESS_SEQ", allocationSize = 1)
@Column(name="id")
private int id;


public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

@Column(name="ADDRESS1")
private String address1;

@Column(name="ADDRESS2")
private String address2;

@OneToOne(fetch=FetchType.LAZY)
@JoinColumn(name="EMPLOYEE_ID")
private Employee employee;


public String getAddress1() {
	return address1;
}

public void setAddress1(String address1) {
	this.address1 = address1;
}

public String getAddress2() {
	return address2;
}

public void setAddress2(String address2) {
	this.address2 = address2;
}

public Employee getEmployee() {
	return employee;
}

public void setEmployee(Employee employee) {
	this.employee = employee;
}

}