I am trying to refactor my code. But I dont know how to do what I want to do. I dont know how it’s called so I dont find it with google. My Code: I want to refactor everything so the final version looks like this: or like this: So the “If(from).IsMultipleOf(3)” shall return true/false and if its true it
Tag: refactoring
argument mismatch; invalid functional descriptor for lambda expression
I am using the jdbi library like so: This try catch pattern is repeated a few times, with various different queries passed to the jdbi.withHandle method. Another example: The jdbi.withHandle method has this signature: I am trying to find a way to reduce the duplication around the try-catch, so that I can use something like this instead: i.e. the handleTransientExceptions
How do I refactor multiple if-else statements in Java?
How do I refactor all this code that seems repetitive and too long, is there a way to make it shorter? I have tried using the Switch statement but that does not work in this circumstance. the “typeOfData” variable holds a String that is used to match relevant lines. Answer Simplify You can extract the common lines, before or after
Refactoring code that contains multiple if conditions
Here is some code I’ve written to save a UrlEntity : The above code exists in a service class and looks unnecessarily complex. I’m attempting to refactor so that the intent is clear. This is a basic refactoring I’ve written: This refactoring does not improve the code substantially. Is there a code pattern or idiomatic way to refactor the method
Refactor regex Pattern into Java flavor pattern
I have a regex pattern created on regex101.com: https://regex101.com/r/cMvHlm/7/codegen?language=java however, that regex does not seem to work in my Java program (I use spring toolsuite as IDE): I get the following error: Is there a way to find out where index 1337 is? Answer The main problem with the regex is that both [ and ] must be escaped in
Extracting multiple string to constant in Intellij IDEA
In my code, there are a lot of strings appeared in the following structure: I would like to extract the string key to a constant. However, doing this one by one will take forever…So, is there a better way to achieve this? Answer No idea in Intellij, but if your lines are genuinely that simple, you can do it with
How to change a package name in Eclipse?
In Eclipse I have a simple Java project that contains a package named (default package) and inside this package I have a class. I want to rename this package into something like: com.myCompany.executable I tried to select the (default package) —> right click —> refactor but now I see only the single voice named: Infer generic type arguments but not
How to simplify a null-safe compareTo() implementation?
I’m implementing compareTo() method for a simple class such as this (to be able to use Collections.sort() and other goodies offered by the Java platform): I want the natural ordering for these objects to be: 1) sorted by name and 2) sorted by value if name is the same; both comparisons should be case-insensitive. For both fields null values are