utility-method

问题 The class java.util.Objects contains the deepEquals(Object a, Object b) method that can be used to compare objects of any type (including arrays and null references), but doesn't contain a similar deepToString(Object o) . This is disappointing. (By the way, the private constructor of this class contains the message "No java.util.Objects instances for you!" that explains to some extent why this class is so mean). That being the case, I've tried to implement the method myself: public static

问题 This question already has answers here : Java 8: Interface with static methods instead of static util class (4 answers) Closed 4 years ago . For the past decade or so, I've been using the pattern below for my Java utility classes. The class contains only static methods and fields, is declared final so it can't be extended, and has a private constructor so it can't be instantiated. public final class SomeUtilityClass { public static final String SOME_CONSTANT = "Some constant"; private

问题 This question already has answers here : Java 8: Interface with static methods instead of static util class (4 answers) Closed 4 years ago . For the past decade or so, I've been using the pattern below for my Java utility classes. The class contains only static methods and fields, is declared final so it can't be extended, and has a private constructor so it can't be instantiated. public final class SomeUtilityClass { public static final String SOME_CONSTANT = "Some constant"; private

问题 I am creating one app in which i want to detect that iphone is on silent mode or not. I have already gone thought the below link Detecting the iPhone's Ring / Silent / Mute switch using AVAudioPlayer not working? Switching between silent mode and ring mode on an iPhone many people says that it is against the iPhone policy. but i have seen many app which is also giving this functionality check the below app link https://itunes.apple.com/us/app/silentalert/id506092189?mt=8 I also want to change

问题 What are some current "rules of thumb" for implementing JQuery namespaces to host general purpose utility functions? I have a number of JavaScript utility methods scattered in various files that I'd like to consolidate into one (or more) namespaces. What's the best way to do this? I'm currently looking at two different syntaxes, listed in order of preference: //****************************** // JQuery Namespace syntax #1 //****************************** if (typeof(MyNamespace) === "undefined"

问题 This question already has answers here : Java: Static Class? (7 answers) Closed 5 years ago . I want to create a class with utility methods, for example public class Util { public static void f (int i) {...} public static int g (int i, int j) {...} } Which is the best method to create an utility class? Should I use a private constructor? Should I make the utility class for abstract class? Should I do nothing? 回答1: For a completely stateless utility class in Java, I suggest the class be

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed last year . I generally live by the rule that Global variables / functions are evil and that every piece of code should live in the class to which it pertains. This is a very easy rule to follow, and I believe that I haven't ever run into an issue with this rule until now. Today, however,

问题 I realise this question has been asked many times, but I am still unable to completely understand this concept. In my application, I am using a static utility class to keep common methods (like showing error dialogs) Here is how my static class looks like: public class GlobalMethods { //To show error messages public static final void showSimpleAlertDialog(final Activity activity, String message, final boolean shouldFinishActivity) { if (!activity.isFinishing()) { AlertDialog.Builder builder =

问题 I am developing a web application in ASP.NET MVC3 with C# and Razor. I need to create an utility class where I put functions to convert string into dates(years, months, days, etc...). In ASP.NET Web Forms I used to place this kind of classes inside the App_Code folder. In MVC there is not such folder and I don't think utility classes belong neither to Models nor to Helpers (a folder I created to put my extensions on HTML Helpers). I read that is a good practice to place the utility classes in

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago . Here's an example of a utility method: public static Long getFileSize(String fileString) { File file = new File(fileString); if (file == null || !file.isFile()) return null; return file.length(); } Is it a good practise to pass a String rather than a File to a method like