Tagged Questions
2
votes
3answers
80 views
Design Strategy of CSV Parser
I wanted to review my design strategy for CSV parser.
I have 4 CSV files, which have different layouts as shown below.
Each row of a CSV file will be mapped to a class. For example, if CSV_FILE_A has ...
2
votes
1answer
81 views
Review of simple Java Actor library
How can I improve this code?
Also available from git://github.com/edescourtis/actor.git .
Actor.java
package com.benbria.actor;
public interface Actor<T> extends Runnable {
public ...
-1
votes
1answer
112 views
please review my switch case code
Now I hava a enum param and wants to do something which is acording to the enum param value.
While the enum param is too much and my method will become too long.How can I refactor my code?
I know ...
0
votes
1answer
64 views
Q&A system model design [closed]
Now I am trying to build a Q&A website by myself.The models below is my model design.I have some questions about this.
1、class Category：
public class Category {
private String name;
}
...
0
votes
1answer
59 views
how do I encapsulate this List<Message> properly?
I know that Swing isn't true MVC:
Using this modified MVC helps to more completely decouple the model
from the view.
Leaving aside the veracity of the above claim, the problem I run into is ...
1
vote
1answer
32 views
Opinions on my Command pattern design - is it extensible?
I am implementing a program that takes commands from a user and based on those commands, drives a Robot on a grid. To implement this program I have used the Command pattern. I have used this pattern ...
0
votes
0answers
32 views
immutable metadata constructor access
I want an immutable class, and the constructor should be package private. However, it ends up getting used outside the package:
package gnu.mail.providers.nntp;
import gnu.inet.nntp.GroupResponse;
...
1
vote
0answers
22 views
Is this a good approach for a BayeuxClient class?
Is this a good approach for a BayeuxClient class?
Reading cometd reference book, Chapter 6 Java Libraries, I created this BayeuxClient class.
As a newbie to cometd, I would like to know if this ...
4
votes
2answers
140 views
Is this a correct way to use Factory Pattern?
I have an abstract class which implements the IDataCreator interface:
public interface IDataCreator
{
public String getDataString();
}
public abstract class AbstractCreator implements ...
2
votes
1answer
80 views
Observer pattern in Java
I'm going to have a lot of integer values, and at any value change I might need to update any number of UI elements, other values which are computed from the first ones, etc. Sounds like time for the ...
2
votes
1answer
77 views
Design Pattern for Swing application
I have a Swing application with no real design pattern. I want to start learning to design Swing or any types of application properly. Here is the main JFrame class.
import java.awt.Component;
...
4
votes
2answers
91 views
Move object by one up or down algorithm in a custom order
Basically, I did an object (using hibernate) with a field called sorting_order. This field needs to be unique and I wish to swap two object by one. So one element has to be after or before the current ...
2
votes
1answer
84 views
Using AbstractFactory
I am a newcomer to design patterns. I read some articles about the abstract factory pattern, and wrote the following simple example:
public interface ParserFactory {
List<ITransport> ...
-1
votes
1answer
80 views
design classes for a JAVA swing application [closed]
I am very new in making JAVA swing applications..
My problem statement is to make a library management application,for which i designed classes as below.
Please tell me whether my design of classes ...
6
votes
3answers
332 views
FactoryPattern without If-else construct
Someone asked me if I can create factory pattern in java without using If-else construct. So I come with the following. Please provide your inputs if this seems a good example for using factories.
...
