Tagged Questions

4
votes
2answers
561 views

Is it a bad habit to (over)use reflection?

Is it a good practice to use reflection if greatly reduces the quantity of boilerplate code? Basically there is a trade-off between performance and maybe readability on one side and ...
2
votes
2answers
273 views

Programming methodology - best way to level up? [closed]

Ok, so I'm at a point where I think I have my basics down. I'd like to think I'm just starting to become an intermediate dev. So, how do I level up here? It feels like I have reached my threshold, ...
1
vote
2answers
89 views

Wrapping specific checked exception in domain unchecked ones? [duplicate]

Uncle Bob says in Clean Code book that Unchecked Exceptions should be used. Now JDK has some checked exceptions: IOException, IllegalAccessException etc. which cannot be avoided. In my application ...
5
votes
4answers
507 views

Differences in If… Else… statement

When I first started to learn programming I remember having an argument with my teacher about If Else statements. I was arguing that: if { ... } else if { ... } ... is basically the ...
3
votes
4answers
457 views

Replacement for instanceof Java?

So I'm fairly new to programming in the real world (outside of academic projects) and have come across lots of posts saying that using instanceof is a bad thing to use to determine what class a ...
15
votes
9answers
998 views

Should the methods of a class call its own getters and setters?

Where I work I see lots of classes that do things like this: public class ClassThatCallsItsOwnGettersAndSetters { private String field; public String getField() { return field; ...
13
votes
2answers
597 views

What is the best approach for inline code comments?

We are doing some refactoring to a 20 years old legacy codebase, and I'm having a discussion with my colleague about the comments format in the code (plsql, java). There is no a default format for ...
6
votes
5answers
281 views

Everything has an Interface [duplicate]

Possible Duplicate: Do I need to use an interface when only one class will ever implement it? I am taking over a project where every single real class is implementing an Interface. The ...
2
votes
2answers
588 views

Best practice for packing Java enums?

What is the best practice for packaging Java enums? is it separate file for each enum? or having same file for all the enums? What are the pros and cons ?
21
votes
2answers
3k views

Choosing between Single or multiple projects in a git repository?

In a git environment, where we have modularized most projects, we're facing the one project per repository or multiple projects per repository design issue. Let's consider a modularized project: ...
8
votes
11answers
3k views

Why is using System.out.println() so bad? [closed]

Of course, it is very good use to use a logging framework for the error messages or warnings. But sometimes I use System.out.println() if I want to try something new in a short time. Is it really so ...
2
votes
3answers
169 views

A place for putting code samples in projects

Every now and then I get or write some minimal code samples to achieve tasks. What's the usual practice for storing these samples (which could prove useful later on) ? Have a separate source folder or ...
4
votes
2answers
619 views

Multiple Same Object Instantiation

What exactly happens in Java when you instantiate the same object multiple times? For example: Test test = new Test(); then later on I will call it again, Test test = new Test(); again or inside a ...
5
votes
3answers
268 views

When module calling gets ugly

Has this ever happened to you? You've got a suite of well designed, single-responsibility modules, covered by unit tests. In any higher-level function you code, you are (95% of the code) simply ...
79
votes
10answers
6k views

Should we avoid object creation in Java?

I was told by a colleague that in Java object creation is the most expensive operation you could perform. So I can only conclude to create as few objects as possible. This seems somewhat to defeat ...
1
vote
1answer
156 views

Synchronously write file

I am implementing a server in C for a course project. The server should serve more than one client simultaneously. The description of the project states that fork() should be used to serve more than ...
4
votes
2answers
295 views

Manage query strings in JDBC methods

I am trying to find out which is the best practice when organising the PreparedStatement strings in a application which uses JDBC to connect to the database. Usually this is the way I retrieve the ...
7
votes
3answers
250 views

When comparing a combination of String literals, is it convention to call .equals() on the literal? [closed]

There are benefits to each, and I understand the differences - but what is considered best / standard practice? Why? "myString".equals(myStringVar) Avoids a potential NPE and does not require a ...
1
vote
1answer
198 views

Effective programming of data layer management/access

Short Version: What is the term/concept which describes the efficient design of programming the data layer for efficient data access and what are some sources/books/articles/website which discuss this ...
14
votes
6answers
2k views

Efficient try / catch block usage?

Should catch blocks be used for writing logic i.e. handle flow control etc? Or just for throwing exceptions? Does it effect efficiency or maintainability of code? What are the side effects (if there ...
3
votes
2answers
392 views

Lazy Processing of Streams

I have the following problem scenario: I have a text file and I have to read it and split it into lines. Some lines might need to be dropped (according to criteria that are not fixed). The lines ...
8
votes
2answers
202 views

Low coupling processing big quantities of data

Usually I achieve low coupling by creating classes that exchange lists, sets, and maps between them. Now I am developing a Java batch application and I can't put all the data inside a data structure ...
0
votes
5answers
520 views

Do I have to write a lot of boilerplate code if I keep working using Java? [closed]

I'm working for a company writing ERP applications. My problem is that I have to write tons of boilerplate code. I came up with ideas to automatize/prevent the drudgery but only some of them were ...
1
vote
0answers
44 views

Good practice and terminology of braces [duplicate]

Possible Duplicate: Should curly braces appear on their own line? I've come across two methods of using braces with if/for/switch/while/function blocks in Java, JS, C++, and PHP (any ...
3
votes
3answers
338 views

Separating the UI from its event handlers and database queries

Is it a good practice to separate the handlers and database queries in different classes? There will be a separate class containing all the necessary event handlers, and there would also be another ...
12
votes
3answers
4k views

Which is a better practice - helper methods as instance or static?

This question is subjective but I was just curious how most programmers approach this. The sample below is in pseudo-C# but this should apply to Java, C++, and other OOP languages as well. Anyway, ...
2
votes
1answer
240 views

Should I devise a FileHandler interface to deal with different Files?

My background has largely been manual testing and I started learning core java to be able to work with Selenium. I am wanting to write couple of reusable method, like reading/writing data from csv, ...
2
votes
3answers
433 views

When to deprecate and when to delete in Java

As part of a refactoring effort or just ongoing development, a particular method or maybe an entire class may become obsolete in some sense. Java supports the @Deprecated annotation to indicate that ...
16
votes
7answers
7k views

How many lines per class is too many in Java?

In your experience, what is a useful rule of thumb for how many lines of code are too many for one class in Java? To be clear, I know that number of lines is not even close to the real standard to ...
7
votes
3answers
747 views

Is there a good reason to use Java's Collection interface?

I've heard the argument that you should use the most generic interface available so that you're not tied to a particular implementation of that interface. Does this logic apply to interfaces like ...
19
votes
12answers
1k views

How to teach Exception Handling for New Programmers?

How do you go about teaching Exception Handling to Programmers. All other things are taught easily - Data Structures, ASP.NET, WinForms, WPF, WCF - you name it, everything can be taught easily. With ...