编辑代码

import java.util.*;

import java.util.stream.*;

public class EmployeeInformationTest {

    public static void main(String args[]) {
        List<Employee> employees = Arrays.asList(
        new Employee("Jai"),
        new Employee("Adithya"),
        new Employee("Raja"));
        List<String> names = employees.stream().map(s -> s.getEmployeeName()+"::"+s.getEmployeeName()).collect(Collectors.toList());
        System.out.println(names.get(0));
    }

}

//Employee类
class Employee {
    private String empName;
    private String empDesignation;
    public Employee(String empName) {
        this.empName = empName;
    }

    public String getEmployeeName() {
        return empName;
    }

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

    public String getEmployeeDesignation() {
        return empDesignation;
    }

    public void setEmployeeDesignation(String empDesignation) {
        this.empDesignation = empDesignation;
    }
}