Java Program to create a new list with values from existing list

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;
public class Demo {
	public static void main(String args[]) {
		List<Employee>emp = Arrays.asList(new Employee("Jack", 29, "South"), new Employee("Tom", 24, "North"), new Employee("Harry", 35, "West"),new Employee("Katie", 32, "East"));
		List<String>res =  emp.stream().map(u ->u.displayEmpName()).collect(Collectors.toList());
		System.out.println("Employee Names = "+res);
	}
}
class Employee {
	private String emp_name;
	private int emp_age;
	private String emp_zone;
	public Employee(String emp_name, int emp_age, String emp_zone) {
		this.emp_name = emp_name;
		this.emp_age = emp_age;
		this.emp_zone = emp_zone;
	}
	public String displayEmpName() {
		return this.emp_name;
	}
}