setter

问题 package cen.col.course.demo; import java.io.Serializable; public class Course implements Serializable { private static final long serialVersionUID = 1L; protected String code; protected String title; protected Professor professor; public Course( String code) throws InvalidDataException { super(); setCode(code); } public Course(String code, String title ) throws InvalidDataException { this(code); setTitle(title); } public Course(String code, String title, Professor professor) throws

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Understanding Python decorators What function does the "class decorator"/"method decorator" ( @ ) serve? In other words, what is the difference between this and a normal comment? Also, what does setter do when using @previousMethod.setter before a method? Thank you. 回答1: @decorator def function(args): #body is just syntactic sugar for: def function(args): #body function = decorator(function) That's really it. As

问题 hi i am new to ios dev ,I am trying to set a value for nsstring from delegate class and access from other class ,the value i get is null.i dont know what mistake i am doing? //token class header file @interface TokenClass : NSObject { NSString *tokenValue; } @property (nonatomic,strong) NSString *tokenValue; //token class main file @implementation TokenClass @synthesize tokenValue; @end //App Delegate TokenClass *token = [[TokenClass alloc]init]; [token setTokenValue:@"as"]; when i access

问题 @interface ViewController : UIViewController{ NSNumber *nmbr; } @property (nonatomic, readonly) NSNumber *nmbr; - (NSNumber*)nmbr; - (void)setNmbr:(NSNumber *)value; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; [self setNmbr:[NSNumber numberWithInt:4]]; NSLog(@"Value of number is: %@", self.nmbr); } - (NSNumber*)nmbr{ return nmbr; } - (void)setNmbr:(NSNumber *)value{ nmbr = value; } @end I am expecting the program not to let setNmbr function work because nmbr

问题 I need to fix my addQuiz() in my student class. Then, with that class, I pull all the info into my main of prog2. I have everything working except two things. I need to get the formula fixed for my addQuiz() so it totals the amount of points entered, and fix the while statement in my main so that I can enter a word to tell the program that I am done entering my quizzes. Here is my main file. import java.util.Scanner; public class Prog2 { public static void main(String[] args) { Scanner in =

问题 I have to create a code that takes user input for grades based on a students name that the user has inputted. The input is to stop when a number less than 0 is inputted and the output should be the student name, the total of all the scores, and the average score. For some reason I cannot get the average or the total to print, and my counter in my student class is showing an error "remove this token '++'" Here is my main class, and my student class : /** * COSC 210-001 Assignment 2 * Prog2

问题 I am trying to reference a setter... I received help and selected the answer too soon before resolving the issue.... see here: Using a setter from outside a form? So, what I'm doing is this... Data goes into the log and it gets parsed, then it goes back to the form where it is displayed. public class Log { private MainForm mainForm; // our MainForm variable public Log(MainForm mainForm) { // setting the MainForm variable to the correct reference in its constructor this.mainForm = mainForm; }

问题 Hello dear stackoverflowers :) I came from Java and have one doubt about the syntax of getters (if it's really just a syntax issue). In java you would have a setter like private void setName(value) { variableName = value; } who would take value as an argument and change the instance variable inside it. In ruby, when I explicitly define a setter (due to constraint reasons), I need to use set_name=(value) or if I use the syntax set_name(value) would be the same? In other words, the = in the end

问题 I'm trying to Create a class that holds a location,Including the following methods: Setters (mutators) for each of the data fields For the location name, you should use the trim() method to remove any leading or trailing blank spaces. Getters (accessors) for each of the data fields Constructor: You should have only one constructor that takes the place name, the latitude, and the longitude. You may expect that the data will be valid, although the strings may need to be trimmed. public class

问题 I have created 2 timers in 2 separate classes. One timer increments int counter. and the other uses a get method and prints out the value of int counter. The problem is the second timer only prints out 0, 0, 0 etc if i use private int counter whereas if i were to use private static counter it prints out 1,2,3,4,5 etc which is what i want. But i would rather not use static because ive been told its bad practice. Here is my main class: import java.util.Timer; public class Gettest { public