Contents
How many lines should a class be Java?
Like functions, according to Clean Code, classes should also be “smaller than small”. Some people recommend that 200 lines is a good limit for a class – not a method, or as few as 50-60 lines (in Ben Nadel’s Object Calisthenics exercise)and that a class should consist of “less than 10” or “not more than 20” methods.
How many lines can a method have Java?
As mentioned the above, there is no limit on “lines of code” per class in java, we can probably use 200 lines as a good guideline and not exceed 500 lines per class.
How many classes are allowed in Java?
Classes live in packages. There are 5,000 or so classes built-in to Java, and programmers have written hundreds of thousands if not millions of their own….A Technical Tour.
| Class Modifiers | |
|---|---|
| final | may not be overridden |
| static | method does not apply to a particular instance |
| abstract | has no body; subclasses will implement |
How many lines should be in a java file?
Files longer than 2000 lines are cumbersome and should be avoided. Having followed Sun/Oracle Coding conventions since Java was invented, I’ve found this rule of thumb on lines per class to be reasonable. 99% of your Java Code should conform… And if it goes over 2000, just put a TODO at the top saying the class needs work.
When are there too many lines of code?
There are too many lines of code if the class is doing too many different things. Essentially, if you follow the principle of Single Responsibility for classes, there is a limit to how large the class will grow. As to physical limitations you can have (source: Class file format Java5 ):
How many lines are too many in a class?
Any line that falls within your class’s problem domain written outside of the class is one line too few and one too many in the class where it lives. Think of a class as a topic.
How many classes are there in Java 5?
As to physical limitations you can have (source: Class file format Java5): 65,536 constants, interfaces applied, fields, methods, and attributes–each. Each method can be 4GB (32 bits) of generated byte code.