Java function name length

Длина строки в Java. Метод length()

В этой статье мы поговорим про метод length() . Он позволяет определять длину строк в Java и сравнивать длины этих строк между собой. Давайте посмотрим, как это делается.

Описание метода

Вышеупомянутый метод length() возвращает длину строки в Java, при этом длина определяется, как равная числу шестнадцатиразрядных Юникод-символов в исследуемой строке. Метод использует довольно простой синтаксис:

Таким образом, возвращается длина последовательности символов. Но давайте лучше посмотрим, как это происходит на примерах.

Определяем длину строки в Java

Итак, у нас есть строка, в которой надо определить длину:

Консольный вывод будет следующим:

 
Длина строки " Добро пожаловать на сайт Otus.ru!" - 33 Длина строки " Otus.ru" – 7
 
Вы можете проверить работу этого метода самостоятельно, используя любой онлайн-компилятор Java, например, этот.
 
Сравниваем длины строк в Java
 
Метод length() позволяет не только узнать длину строк, но и сравнить их длины. Вот, как это можно реализовать:
 
 
public class Main < public static void main(String args[]) < // Определяем длины строки s1 и s2. String s1 = "В Otus я стану отличным программистом!"; int len1 = s1.length(); String s2 = "В Otus я стану отличным разработчиком!"; int len2 = s2.length(); // Вывод на экран количества символов в каждой строке. System.out.println( "Длина строки \"В Otus я стану отличным программистом!\": " + len1 + " символов."); System.out.println( "Длина строки \"В Otus я стану отличным разработчиком!\": " + len2 + " символов."); // Сравнение длин строк s1 и s2. if (len1 >len2) < System.out.println( "\nСтрока \"В Otus я стану отличным программистом!\" длиннее строки \"В Otus я стану отличным разработчиком!\"."); >if (len1 < len2)< System.out.println( "\nСтрока \"В Otus я стану отличным программистом!\" короче строки \"В Otus я стану отличным разработчиком!\"."); >else < System.out.println( "\nСтроки \"В Otus я стану отличным программистом!\" и \"В Otus я стану отличным разработчиком!\" равны."); >> >
 
Получим следующий результат:
 
 
Длина строки "В Otus я стану отличным программистом!": 38 символов. Длина строки "В Otus я стану отличным разработчиком!": 38 символов. Строки "В Otus я стану отличным программистом!" и "В Otus я стану отличным разработчиком!" равны.
 
В результате метод length() позволяет нам как узнать длину строки, так и сравнить несколько строк. Но, как вы уже заметили, это был простейший код. Если же вы хотите прокачать навыки Java-разработчика на более продвинутом уровне, добро пожаловать на курс не для новичков:
 
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When is a java method name too long
 
Run those tests with long method names, then refactor them to short method names and rerun the tests. Also found similar question (though it didn't appear in my initial search, or when I typed the question title which is weird): Maximum Method Name Length Solution 3: If you go over the size limit imposed by the VM for method names then you get a compiler error (at least with the version of javac I am using): Solution 1: Arguably it will take more space in memory and storage - so a jar file containing classes with enormous method names will be larger than one with short class names, for example.
 
When is a Java method name too long?
 
A name in Java, or any other language, is too long when a shorter name exists that equally conveys the behavior of the method.
 
 Some techniques for reducing the length of method names: 
 
 
If your whole program, or class, or module is about 'skin care items' you can drop skin care. For example, if your class is called SkinCareUtils , that brings you to getNumberOfEligibleItemsWithinTransaction
 
You can change within to in , getNumberOfEligibleItemsInTransaction
 
You can change Transaction to Tx, which gets you to getNumberOfEligibleItemsInTx .
 
Or if the method accepts a param of type Transaction you can drop the InTx altogether: getNumberOfEligibleItems
 
You change numberOf by count: getEligibleItemsCount
 
 
Now that is very reasonable. And it is 60% shorter.
 
Just for a change, a non-subjective answer: 65536 characters.
 
 
A.java:1: UTF8 representation for string "xxxxxxxxxxxxxxxxxxxx. " is too long for the constant pool
 
 
How do I write method names in Java?, While writing a method name we should follow the camel case i.e. first letter of the first word should be small and the first letters of the
 
Max name length of variable or method in Java
 
If I'm not mistaken, the limit is not in the language itself but in the classfile format, which limits names to 64k, so for all practical intents and purposes identifier length is not a problem. Specifically, this is the definition of a constant string in the pool, which seems to imply the maximal length is 16 bit:
 
Class names may be more of an issue for file systems, I agree, I'm not sure what's currently supported.
 
JLS: An identifier is an unlimited-length sequence of Java letters and Java digits, the first of which must be a Java letter.
 
Also found similar question (though it didn't appear in my initial search, or when I typed the question title which is weird): Maximum Method Name Length
 
If you go over the size limit imposed by the VM for method names then you get a compiler error (at least with the version of javac I am using):
 
 
Main.java:1: UTF8 representation for string "aaaaaaaaaaaaaaaaaaaa. " is too long for the constant pool
 
 
Inserting line break after method name in Java method declaration, There is no specified line indentation in Java. That means unline Python, in Java indentations are not syntactically counted.
 
Does the method name length have any impact whatsoever on the performance?
 
Arguably it will take more space in memory and storage - so a jar file containing classes with enormous method names will be larger than one with short class names, for example.
 
However, any difference in performance is incredibly unlikely to be noticeable. I think it's almost certain that the projects where they were blaming long method names for poor performance were actually misdiagnosed. It's not like it would be the first time that's happened.
 
Of course, the best way to take the heat out of this situation is to provide evidence - if performance is important, you should have tests for performance. Run those tests with long method names, then refactor them to short method names and rerun the tests. I'd be incredibly surprised if there were a significant difference.
 
Method names are not just relevant with reflection but also during class loading and of course in both cases a long method names means that at some level there is more for the CPU to do. However, with method name length that are even remotely practical (i.e. not thousands of characters long), I am absolutely certain that it's impossible for this to be significant compared to other things that have to be done during reflection or class loading.
 
 
But the client, and there were some people in the meeting arguing in this, was sure about this. They had some projects in that long method names were the cause of poor performance.
 
 
It sounds like a total guess being treated as fact. This is just a case of some people's general nuttiness about performance. Even if they happen to be right , it's a total guess.
 
Every program has room for performance improvement by changing certain things. Guessing does not inform you what those things are.
 
If two programs that do the same thing have different performance, it only means they've been optimized to different degrees. Your challenge is to explain this.
 
Java Methods, A method is a block of code which only runs when it is called. You can pass data, known as parameters, into a method. Methods are used to perform certain
 
Is there anything inherently wrong with long variable/method names in Java? [duplicate]
 
Nothing inherently wrong, it's better to make it descriptive than cryptic. However, it's often code-smell for a method that is trying to do too much or could be refactored
 
Better getAccountInformation(DateRange range)
 
I prefer to have long variable/method names that describe what's going on. In your case, I think getPlayerWithMostGoals() is appropriate. It bothers me when I see a short variable name like "amt" and I have to transpose that in my head (into "amount").
 
Something like getAmt() is looks like C++ code style. In java usually are used more descriptive names.
 
Your professor made a good understandable method. But it's very popular word. It's not a general case. Use your "longWordStyle" style it's more java.
 
Use of underscore in variable and method names, Except for variables, all instance, class, and class constants are in mixed case with a lowercase first letter. Internal words start with
 
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How long can a Java method name be?
 
The specification of the programming language states that the length of a Java class name is unlimited. In practice, however, the first limit comes from the JVM specification. For the current JVM it’s 65535 characters.
 
How long can a method name be?
 
Use short enough and long enough variable names in each scope of code. Generally length may be 1 char for loop counters, 1 word for condition/loop variables, 1-2 words for methods, 2-3 words for classes, 3-4 words for globals.
 
Why are Java method names so long?
 
The classes and variables have long names because the things they represent have long names. Understanding them doesn’t make them shorter.
 
Are long variable names bad?
 
As per standards, longer descriptive names are advised to make it more readable and maintainable on longer term. If you use very short naming e.g. a variable as a , you will forget yourself, what that variable is meant for after sometime. This becomes more problematic in bigger programs.
 
Can class names start with a number Java?
 
2 Answers. The first character needs to be a “Java letter”, which includes letters, underscore and dollar sign. An identifier is an unlimited-length sequence of Java letters and Java digits, the first of which must be a Java letter. […] 
Can function names be too long?
 
If the function name is ‘too long’ then it is likely that the function itself is also too long and has too much responsibility. Many wise programmers say that a function should do one thing and one thing only. Short, descriptive names go well with short, specific functions… which go well with code reuse.
 
Which keyword makes a variable’s value unchangeable?
 
the final keyword 
The working of the final keyword in Java is that the variable’s pointer to the value is made unchangeable.
 
Why are C function names so short?
 
This is partly historical. In very old C compilers, there was no guarantee that more than the first 8 characters of an identifier name would be used to determine uniqueness. This meant that, originally, all identifiers had to be eight or fewer characters, so method names were all made short.
 
How long is too long for variable names?
 
Descriptive variable names should be between 8-20 characters. This is not a restriction, but just a guideline for the length of variable names. If it’s too long, then it’s really hard to type. If it’s too short, it may not be descriptive enough.
 
What is static in Java?
 
In Java, a static member is a member of a class that isn’t associated with an instance of a class. Instead, the member belongs to the class itself. As a result, you can access the static member without first creating a class instance. The value of a static field is the same across all instances of the class.
 
Which is the longest class name in Java?
 
Java has a culture of encouraging long names, perhaps because the IDEs come with good autocompletion. This site says that the longest class name in the JRE is InternalFrameInternalFrameTitlePaneInternalFrameTitlePaneMaximizeButtonWindowNotFocusedState which is 92 chars long.
 
When is a variable name too long in Java?
 
A variable name is too long when a shorter name will allow for better code readability over the entire program, or the important parts of the program. If a longer name allows you to convey more information about a value. However, if a name is too long, it will clutter the code and reduce the ability to comprehend the rest of the code.
 
Is there a limit to file name length?
 
On Windows there is a maximum file name length limit of 260 characters. See https://superuser.com/questions/811146/windows-7-file-name-length-limited-to-129-characters for how to remove it. Not the answer you’re looking for? Browse other questions tagged java windows git github gitlab or ask your own question.
 
How to fix ” filename too long error ” during Git clone?
 
Filename too long. I tried resolving this by running the below command in my git cmd git config –system core.longpaths true. error: could not lock config file c://.gitconfig: Permission denied error: could not lock config file c://.gitconfig: Invalid argument.
 
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