包含标签：Java 的文章
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Java – converts long to “byte array ed” text without heap allocation
I want to convert the (positive) original long into byte [] For example, a simple method is: 123 = > "123" = > […… -
Java – kotlin native is equivalent to system exit(-1)
In the following kotlin / JVM program, system Exit (- 1) stop program execution with error exit code: fun main(args: A…… -
Multithreading – how to control multithreading synchronization in Perl
I have an array of [A-Z, A-Z] ASCII numbers, as follows: my @ alphabet = (65.. 90,97.. 122); So the main thread functi…… -
Java – the word reversion of a string
I want to reverse the words in the string I try to do it like this: public String reverseWords(String str) { Strin…… -
Java – Android: cannot call private Android without args net. Uri()
I use gson to save the ArrayList of the custom model to the shared preferences Storage Code: ArrayList<DownloadProg…… -
java android new String
I have to convert a byte array to a string So I use this function: public static String byteToString(byte[] bytes) { …… -
Types – how to specify the element type in the vector of SbCl (or common LISP)?
I tried in SbCl 1.1 14, but it seems that type checking ignores the declaration of the vector element (defun test (vec…… -
Java – how to interpret a simple setter as a consumer?
First, please wait patiently Most of the time I work in scala (sometimes only on the JVM side) or other languages, so …… -
Java – unable to write JSON: not for class org json. Jsonobject found the serializer and did not find the property to create beanserializer
I've set the response to JSON, but I get this @RequestMapping(value = "/customerlist",method = RequestMethod.POST) pub…… -
Haskell – idiom prefetching in streaming Library
I am using the streaming library, but I will accept the answer of using pipeline or pipeline Say I have import Streami…… -
Java – replacing stream collection in kotlin native solutions
I am currently using the kotlin function to extract a map from a JSON structure with key value pairs The JSON used to …… -
Java – texture deformation, 4 points
I'm writing a simple 3D game in Java. I need code / library for texture deformation I don't want to use OpenGL Example…… -
Java – spring data JPA repo, why do you need interface services and service implementations
I've just started developing spring boot. JPA using spring data JPA When I generate a model from a table, I create a m…… -
From the switch inside do, but there is no Boolean value. Is this possible? Java
So the code is about the restriction of giving input in do while Maybe it may not have Booleans, or it may change or a…… -
Binary to decimal Java converter
I'm creating a code that allows you to convert binary numbers to decimal numbers and vice versa I've created a code to…… -
Java – use volatile keyword with wrapper class
In Java concurrency classes, I recommend using the following code as counters in multithreaded applications private vo…… -
Java – in dataflow 2 X is the easiest way to convert a tablerow to a string in JSON format?
If I don't write my own function to complete it, then in data stream 2 What is the easiest way to convert a tablerow o…… -
Multithreading – Delphi Seattle 10, multithreading / core performance
I have a 100% Delphi code application It is a 64 - bit windows console application with workload manager and a fixed n…… -
Java – syntax for moving backward in LinkedList?
I know that linkedlists are implemented in a two-way link, so each node has a next and a previous pointer However, I c…… -
java – Files. Blocked / synchronized version of copy
I'm trying to copy files from one directory to another, but I hope the call is blocked so that the program will execut…… -
Java – hibernate inheritance using different primary keys
I'm trying to use table_ PER_ Class policy creates inheritance, but I want to create a different primary key for each …… -
Typescript – async / await clarity, with sleep example
I tried to get async / await suspended through the following implementation, but it didn't work as expected public sta…… -
How do I use selenium java to display the selected option from the multi selection drop-down list?
I'm trying to display all the selected options from the multi - choice drop - down list But there is no right way to d…… -
How to apply some changes to each element in the list > structure using java 8 methods
I have some structures like list < < list < < double > > Listofdoubles I need to convert it to list …… -
Java 8 streams can use multiple projects in a mapping pipeline
I have some data stored in the JPA repository I'm trying to process I wish I could use Java 8 streams to do this, but …… -
Java – processrequest method
When is the processrequest method called? It's hard for me why, why and how to invoke process requests? The reason for…… -
Java – “do not allow exceptions to be caught” checkstyle Report
I'm generating a checkstyle report embedded in Maven site, and one of the problems is that it indicates that exception…… -
Java – (custom) exception of restauthenticationprocessingfilter ordering
I tried to add rest authentication to my application with a token public class RestAuthenticationProcessingFilter exte…… -
Kotlin – NoClassDefFoundError when using exposed
I use exposed as my database library. When I try to run my code, I encounter these errors: Exception in thread "main" …… -
Java – JUnit test cases for custom methods
I'm studying my first job interview as a junior java developer, and now I'm trying to learn JUnit test cases This is a…… -
Java – confused with constructors and subclasses
I can't understand the concept of using constructors with classes This is the parent class: public class A { publi…… -
Java – why does the heap memory usage graph look like this?
I have installed glowroot (Java application monitoring) for my JVM When my application is idle, I get this form of mem……