Recent Posts
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Detailed explanation of the application of sweet alert dialog in Android studio
It's very kind to see this sweet alert dialog, because the tip used by the front-end developer is this JS plug-in. The…… -
Detailed explanation of four methods of Android updating UI
preface I believe every Android Developer knows that updating the UI can only be carried out in the main thread. If it…… -
Android ratingbar control usage details
MainActivity. java activity_ main. xml The above is all about the detailed usage of Android ratingbar control brought …… -
Android custom view implementation of letter navigation bar code
Train of thought analysis: 1. Custom view to implement letter navigation bar 2. Listview implements the contact list 3…… -
Tips for using coordinatorlayout in Android 5.0
Coordinatorlayout implements a variety of rolling effects mentioned in material design. At present, this framework pro…… -
Android imitation Renren sliding sidebar effect
In order to save space and display sufficient information on the interface, most applications use the sidebar, as show…… -
The Android Application “R file” disappears
In fact, Android maintains this public final class R class mainly with new resource files. This r.java does not need t…… -
Java – spring boot extends crudrepository
I'm at @ L_ 301_ 0 @ use hibernate in boot application I am creating a new crudrepository for all my model objects to …… -
Java Swing button color
See the English answer > how to set background color of a button in Java GUI? 7 Now my next stage is to add color t…… -
Java – use interface classes as keys to get specific instance values?
I have the following test cases and can't retrieve values from the map: package tests; import java.util.HashMap; impo…… -
Memory – multithreaded heap management
In C / C + +, I can allocate memory in one thread and delete it in another thread However, as long as someone requests…… -
Are there constants for language code in Java or Java libraries?
Do language codes in Java or Java libraries (such as "en" or "de") have constants? (or use string OK?) I know such thi…… -
Multithreading – why is the compareandswap instruction considered expensive?
Why is the compareandswap instruction considered expensive? I read a Book: "Memory impairment is expensive, like the e…… -
Java – how to access managed beans and session beans from servlets
See the English answer > get JSF managed bean by name in any servlet related Class6 <p:dataTable value="#{myBean…… -
Java – how do I get a new stateful session bean in a servlet thread?
I'm experimenting with EJB3 I want to inject a stateful session bean into a servlet so that every user accessing the s…… -
Java – how to package and run a simple dependency command line application using Maven?
I'm new Java and maven, so it may be simple If I follow Maven 2 Hello world's instructions: http://maven.apache.org/gu…… -
Java – how to use jruby9 1.2. Use GPG to encrypt files in 0?
I am using GPG to encrypt files and send them to my j Ruby project But I didn't find enough resources I've tried ruby …… -
What is the difference between pointers and reference variables in Java?
My java book explains that to use objects, we can assign them to reference variables How is it different from a pointe…… -
Java – simpledateformat parse (string STR) will not throw an exception when STR = 2011 / 12 / 12aaa?
Here is an example: public MyDate() throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/d…… -
How to use java to detect the current display?
I have 2 monitors connected, so I can launch my java application on the primary or secondary monitor The question is: …… -
Java – how to represent the type parameters of general polymorphic static methods in jshell?
In pure Java, I can write class P { static <A> A id (A x) { return x; } static int y = P.<Integer>…… -
Java – the difference between enumeration and enumeration
There is no difference between enumeration data types and enumeration interfaces I became confused between the two I g…… -
Java – cannot send a multipart / mixed request to pop up MVC based rest services
I have a spring MVC and resteasy rest service. I need to test it by sending multipart / mixed requests The service cod…… -
Java: force two-way linked objects
I design a game engine in Java The core of this engine is that there are two types of assets and attributes, among whi…… -
JavaFX: how to connect two nodes in a row?
I want to connect two nodes (from the center of the first to the center of the second) with a line Initial ideas: Supp…… -
Java – distinguish between string args [] and string [] args
I've seen two different ways to declare a string array, but I don't show any difference Anyone can explain the differe…… -
How to view the status of check boxes in the Java GUI?
I have about 200 check boxes in the Java GUI Now I want to list all the checkboxes that the user has checked I can do …… -
Java – how to easily submit neon using git in eclipse
I just upgraded from Mars to eclipse neon Previously, I could select submit from the team menu, and the dialog box wil…… -
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Java: how to resolve lambda parameters of wildcard types?
Then we have a functional interface: public interface Consumer<T> { void accept(T t); } I can use it: .han…… -
Objectmapper serialization in Jackson
I want to serialize different types of lists by using an object mapper, but I don't know how AccountingService accServ…… -
Java – good practice for editing objects by reference?
Suppose I have a type called superstar Now I want to have a method to do some work and edit some properties of a super……