All Questions
15 questions
8
votes
4
answers
2k
views
Are there advantages to using an interface, rather than a class, for a Java application?
Java is often (rightly IMHO criticized) for overusing the class keyword, as it can denote:
a factory to instantiate objects (traditional classes)
a collection of global methods (when all methods are ...
- 1,325
12
votes
5
answers
2k
views
How to introduce new language features in a legacy source code?
I have a coding style related question. In my example it is java, but I think this can be a generic question regarding languages that are changing rapidly.
I'm working on a java code base which was ...
- 243
8
votes
2
answers
1k
views
Is it a good practice to create new variable to see the output of a function?
Consider these 2 types of implementation:
public int add(int x, int y) {
return mysteriousAdd(x, y);
}
public int add(int x, int y) {
int output = mysteriousAdd(x, y);
return output;
}
A ...
- 245
16
votes
2
answers
3k
views
Now that not all method declarations in a Java Interface are public abstract, should the methods be declared with these modifiers?
Starting with Java 8, default methods were introduced into interfaces. Effectively, this means that not all methods in an interface are abstract.
Starting with Java 9 (maybe), private methods will be ...
- 169
1
vote
1
answer
991
views
Coding guidlines for Controller and Dao?
My Controller code:
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
ObjectReader objectReader = objectMapper.reader(...
- 113
9
votes
3
answers
7k
views
Is nesting try-catch statements still a code smell if nested within a loop?
I have heard that nesting try-catch statements can often be a code smell, so I'm wondering whether this situation is an exception. If not, what would be some good ways to refactor?
My code looks like ...
- 201
17
votes
4
answers
68k
views
How to deal with Classes having the same name (different packages)
Me and my R&D team maintain a large codebase. We've divided our business logic into multiple packages. some of which have classes with identical names.
As you can guess, the names conflict when ...
1
vote
1
answer
268
views
Sorting Array before looping : best practice
I was going through JBAKE code at
https://github.com/jbake-org/jbake/blob/master/src/main/java/org/jbake/app/Asset.java : 58
PFB the code.
Why are we sorting the array here?
if (assets != ...
- 167
-1
votes
2
answers
255
views
Getters with data conversion in Java VOs [closed]
I am working on a standard Spring application where DAO layer returns entities to service layer and service layer returns VOs to other services and controllers.
In a certain scenario, we have a VO ...
- 383
0
votes
0
answers
98
views
Is there any necessity to pass a variable parameter to a method while the variable declared global? [duplicate]
I am writing a class in java of Monte-Carlo algorithm. Here is the written code -
public class MonteCarlo {
int[][] matrix;
public void monteCarlo(List<Node> nodeList) {
matrix ...
- 315
2
votes
3
answers
533
views
Should one value simpler code over performance when returning multiple values?
I'm too often facing situations where I need to get several types of information from a method. I usually think long and hard to circumvent these situations but I'm thinking it's pointless work that I'...
- 131
19
votes
2
answers
28k
views
Excessive use “this” keyword in Java [duplicate]
The this keyword is primarily used in three situations.
The first and most common is in setter methods to disambiguate variable references.
The second is when there is a need to pass the current ...
- 370
3
votes
3
answers
6k
views
articles in variable names and hard-coding strings
re-edited by author: no this is not 2 questions. This is one question about code review questions containing two separate points. Please do not edit my question.
For naming variables, the two sides ...
- 49
5
votes
2
answers
2k
views
Should you create a class within a method?
I have made a program using Java that is an implementation of this project: http://nifty.stanford.edu/2009/stone-random-art/sml/index.html. Essentially, you create a mathematical expression and, ...
- 153
47
votes
9
answers
61k
views
Line break before or after binary operator? [closed]
While Sun's Java code convention suggests to put line break before the operator, many other guidelines disagree with it. I do not see any obvious pros and cons. Are there advantages of using one of ...
- 1,511