Java
-
Java-8 – you can know the size of the stream without using terminal operations
I have three interfaces public interface IGhOrg { int getId(); String getLogin(); String getName(); …… -
JavaFX: creating custom data attributes for nodes
I currently need custom attributes, which I can get at any time Is there any way to create custom data attributes for …… -
Java – volley – how to return ArrayList from onresponse method in Volley
I am using volley to parse movie details in the rest API. I save the parsed data in the ArrayList of the object named …… -
Java – the difference between parallel flow and completable future
In the book "Java 8 in action" (urma, Fusco and mycroft), they emphasize that parallel flows internally use a common f…… -
Java – a unique list of elements for a given list
Given the ArrayList transaction of sorted integer ArrayLists, I am writing code to return its unique element For examp…… -
Java – selenium: http: / / localhost: 4444 / WD / hub returns NullPointerException. What did I do wrong
Given: try using this code to use remotewebdriver in c# var url = new Uri("http://localhost:4444/wd/hub"); var wd = ne…… -
Rxjava allows multiple onerror calls
I tried to allow unlimited flow on the next and wrong call The following code uses the retry () method. I assume that …… -
Java – Hal rendering cannot be obtained using spring HATEOAS and Jersey
I use spring initializr（ https://start.spring.io/ ）To create a starter application with only "Jersey (Jax - RS)" and…… -
Java-8 – Java 8 – maps to comma separated pairs in parentheses
What is the best method in Java 8? Map<Integer,Integer> Like a string: [k1,v1],[k2,v2],[k3,v3]... I'm looking at…… -
Java – constructor. In onbindviewholder() What is the difference between getadapterposition () and the position attribute of the constructor [copy]
See English answer > lint error "do not treat position as fixed; only use immediately..." 1 public void onBindViewH…… -
Java – change the time zone of Tomcat [copy]
See English answers > change timezone in Tomcat 4 >When I use the java time pack to access the system default ti…… -
Haskell – memory usage of deferred data types
I wrote a program to analyze and operate on the data in the file My first implementation uses data Bytestring to read …… -
Java – the equivalent file. Java in Google drive API v3 Settitle method
This is an official example: package com.google.api.services.samples.drive.cmdline; import com.google.api.client.auth…… -
java – Performance Encog vs Deeplearning4J
We are developing Java projects using neural networks We want to test different network structures on our data set Now…… -
How to use gridpane JavaFX to make buttons span multiple columns / rows?
I am new to JavaFX and am trying to use gridpane for simple button design I can't figure out how to make buttons span …… -
Java – empty all field swings at once
I have a JPanel with many jtextfields and JCombo@R_779_2419 @Es and jradiobuttons, so I want them to be in the default…… -
Java – left to right evaluation of expression and operator priority Why does the left to right assessment seem to win?
Consider the following codes: public class Incrdecr { static int x = 3; static int y = ++x * 5 / x-- + --x; public s…… -
Group object lists and count them using java collections
Which Java collection class better groups object lists? I have a list of messages from the following users: aaa hi bbb…… -
How to programmatically trigger mouse events in JavaFX?
The following code shows two panels, yellow and blue, where blue is the child of yellow If I click the center of the b…… -
Java inheritance and method parsing order
I have the following code example: class p { public void druckauftrag() { // ... drucke(); } …… -
Java – prevent jsup. Java Parse delete end tag
I'm using jsup Parse parses a piece of HTML Everything else is great, but I should parse this HTML later in the PDF co…… -
Java – why UUID Will the initial call to randomuuid () slow down?
Given the following code snippet, it generates a UUID Randomuuid(), I get the following performance results (in millis…… -
java – Android. Search and filter in recyclerview
Translate using "Google translate"! Briefly describe the problem I decided to try recyclerview There is no need to imp…… -
Java – how to convert an object to an enumeration to use it in a switch statement
Using java 8, I have a map. I need to convert it to another map to replace the key name and sometimes the value For ex…… -
Java – get the month name of a specific date range
I have a date range '2015 / 01 / 01' to '2015 / 12 / 31' From this date range, I want to display the unique device of …… -
Java – Best Practices for passing parameters
Suppose I have an application class with about 10 fields In other utility classes, I have one of the following two met…… -
Java – use variable class names instead of many if clauses?
I'm trapped now. I don't know it's easier to solve this problem. Maybe you can help me I have an interface called anim…… -
Java 8: extracting sub streams from streams
I have an object stream from which I need to extract a stream with only some object properties For example, from strea…… -
Java – use mockmvc to get the HttpServletRequest attribute
I have a very simple controller defined in this way: @RequestMapping(value = "/api/test",method = RequestMethod.GET,pr…… -
How to replace the occurrence of the nth character in a string?
I need to replace all commas after the fifth Therefore, if a string contains 10 commas, I want to leave only the first…… -
The Java – H2 console and spring security – permitall() do not work properly
I'm creating a rest API and implementing spring security – everything is fine, but I want (now, when I'm still develop…… -
java – Mono. AndroidTools. Installfailedexception: failed
I encountered this problem and my application will not compile I tried to use the playback service in my application, ……