How can I find out that whether a method is considered a long method or not. Because, it may possibly contain 3 lines of code or it may contain 300 lines of code. If it contains 3 lines of code then it is not a long method, but if it contains 300 lines of code then definitely it is a long method. My question is how can someone find out that whether it is a long method or not. Is there any algorithm?
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Uncle Bob suggests a method should have no more than 4 lines. Only in rare cases you could disregard this rule.
Sergii Shevchyk
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Uncle Keith suggests that this is too small a number. The vast majority of Java methods in the world (excepting accessors) exceeds this number. This includes most methods in textbooks and in production code. – kc2001 Dec 14 '18 at 19:56
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There are many existing metrics packages that measure the size of methods (e.g., the Eclipse Metrics plug-in). The number of lines that constitutes a "long" method varies by language and by various authors' opinions (e.g., see this book on OO metrics).
kc2001
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