public class Study {    public static void main(String[] args) {        Person ming = new Person();        Person hong = new Person();        ming.setName("Xiao Ming");        // TODO: 给Person增加重载方法setName(String, String):        hong.setName("Xiao", "Hong");        System.out.println(ming.getName());        System.out.println(hong.getName());    }}class Person {    private String name;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public void setName(String firstName, String lastName) {        this.name=firstName+" "+lastName;    }}