请帮我解释下private而采用这种SET GET 有什么目的public class LoginActionForm extends ActionForm {private String username;private String password;public String getUsername(){return username;}public void SetUsername(String usernam

请帮我解释下private而采用这种SET GET 有什么目的public class LoginActionForm extends ActionForm {private String username;private String password;public String getUsername(){return username;}public void SetUsername(String usernam
请帮我解释下private而采用这种SET GET 有什么目的
public class LoginActionForm extends ActionForm {
private String username;
private String password;
public String getUsername(){
return username;
}
public void SetUsername(String username){
this.username=username;
}
public String getPassword(){
return password;
}
public void SetPassword(String password){
this.password=password;
}
}

请帮我解释下private而采用这种SET GET 有什么目的public class LoginActionForm extends ActionForm {private String username;private String password;public String getUsername(){return username;}public void SetUsername(String usernam
为了体现封装性
首先执行set方法 然后执行get方法 set方法是对password赋值 当你要用到password时可以调用getpassword();方法