Java Program to create a new list

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
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 = processElements(emp, p -> p.displayEmpName());
		System.out.println("Employee Names + " + res);
	}
	public static < X, Y > List < Y > processElements(Iterable < X > src,
	Function < X, Y > mapper) {
		List < Y > list = new ArrayList <> ();
		for (X p: src)
		list.add(mapper.apply(p));
		return list;
	}
}
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;
	}
}