All Questions
Tagged with programming-practices java
135 questions
276
votes
14
answers
125k
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 ...
- 2,657
296
votes
16
answers
30k
views
Grokking Java culture - why are things so heavy? What does it optimize for? [closed]
I used to code in Python a lot. Now, for work reasons, I code in Java. The projects I do are rather small, and possibly Python would work better, but there are valid non-engineering reasons to use ...
- 1,569
283
votes
6
answers
168k
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:
...
- 3,017
0
votes
1
answer
239
views
Is immutable objects over POJO in general?
Lombok is used in the legacy project where I am currently working for since last year. The project is legacy with 10+ years, and POJO/JavaBeans, i.e. @Data annotated classes, have been widely used for ...
- 1,925
84
votes
8
answers
73k
views
Is modifying an incoming parameter an antipattern? [closed]
I am programming in Java, and I always make converters sort of like this:
public OtherObject MyObject2OtherObject(MyObject mo){
... Do the conversion
return otherObject;
}
At the new ...
- 1,439
2
votes
4
answers
3k
views
I wrote a class with "init" method. Should I call it from other class methods? Or leave it to the object user? (Code Design)
I have a java class with an init method. It's different from the constructor. The constructor just initializes the variables/fields. The init method connects to a database and performs some ...
- 131
45
votes
6
answers
14k
views
Is it better to check `c >= '0'` or `c >= 48`?
After a discussion with some my colleagues, I've a 'philosophical' question about how treat the char data type in Java, following the best practices.
Suppose a simple scenario (obviously this is only ...
- 585
87
votes
10
answers
111k
views
How many lines per class is too many in Java? [closed]
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 ...
- 1,672
36
votes
9
answers
15k
views
Why do schools teach arrays over List? [closed]
Most of the assignments in my school for the initial programming classes required me to use arrays. I work full time now, and I never used an array for any project that I have worked on. Even in the ...
- 803
9
votes
2
answers
1k
views
Should function names describe their parameter types?
If you wish to perform the same action using different parameters, you can either make differently named functions:
public Apple findAppleById(long id){
return repo.findById(id);
}
public Apple ...
- 217
-1
votes
1
answer
16k
views
@Getter, @Setter vs @Data in lombok? [closed]
So I was sending code for review and approvals for some changes I made recently. that includes a class as below:
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class ...
- 181
1
vote
4
answers
341
views
Storing both a compiled service for a Docker container as well as the container in a repository. Good practice, bad practice or no precedent?
This has erupted from quite a turbulent meeting between two senior developers, a lead developer and an engineering lead, and after 90mins reached no resolution.
We create Spring Boot Java services ...
- 362
46
votes
6
answers
7k
views
How necessary is it to follow defensive programming practices for code that will never be made publicly available?
I'm writing a Java implementation of a card game, so I created a special type of Collection I'm calling a Zone. All modification methods of Java's Collection are unsupported, but there's a method in ...
- 1,754
49
votes
7
answers
48k
views
Is it a bad practice to have an interface to define constants?
I am writing a set of junit test classes in Java.
There are several constants, for example strings that I will need in different test classes.
I am thinking about an interface that defines them and ...
- 932
8
votes
6
answers
5k
views
What is more important? SOLID or KISS?
What is more important? SOLID or KISS?
To be consistent with SOLID I would have to inject Decorator and Footer classes and create interfaces for them.
public class HelloService {
String name;
...
- 99