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Java equivalent Delphi language features
See English answer > equivalent of c# anonymous methods in Java? 6 I see from the Java language specification that …… -
Java – regular expressions extract specific strings
1X79 "The X-Files" (1.01) 9/10/93 1/17/94* 11/ 6/94* 1X79 "The X-Files" (1.01) 9/10/93 1/17/…… -
Accessing poloniex HTTP API using java
I tried to connect to poloniex com API https://poloniex.com/support/api/ , which says: But I always get {"error":"Inva…… -
Vector – clojure – define a data structure for a person
In other languages, how to create structures is very self - evident How would you do such a thing in clojure? For exam…… -
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 – 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 – settext from another fragment independent activity
I want to set textview in the fragment of another activity. This activity is not a fragment transaction of mainactivit…… -
Java – what is notifyitemrangechanged (0, this. Data. Size()); How does it work in this example?
I understand how the onbindviewholder of viewholder works, but I don't know how notifyitemrangechanged (0, this. Data.…… -
Database – Java multiple database connections in UserTransaction
static void clean() throws Exception { static void clean() throws Exception { final UserTransaction tx = InitialCont…… -
How efficient is java serialization?
We have a class named row, which represents a row in the result set We need to write a list < < row > submiss…… -
What is the correct way to print to users in Java
My computer science teacher told me that I should not print strings from getter and other methods, and I should print …… -
JavaFX slider to change width (thickness)
My problem is that the default slider is too thin Thank you for your advice Solution In JavaFX, most styles can be don…… -
Java – outofmemoryerror: compress class space
I received this error: "java.lang.OutOfMemoryError: Compressed class space" Until I figure out what trigger it is, I t…… -
Java 8 Lambdas and concurrent interpretation
I'm reading Lambdas in Richard Warburton's Book Java 8 Lambdas He began to discuss the use of concurrency in modern CP…… -
Execute Java callback on new thread
In this project, the manager performs event queuing and returns the result of the event using a callback (the callback…… -
Java – textview confirmation location
I'm trying to make an Android code that provides different work for each button So when the user presses button 1, the…… -
How to get each number separately by numbers (floating point numbers) and using int Java
Is there a good way to search the first four numbers of a floating-point number and return each number separately with…… -
Java – set Proguard to confuse only my application packages
I tried to use Proguard for obfuscation, but got a third-party library error, so I excluded each package one by one: -…… -
Java – how do I reverse the seekbar value?
I have the following code: int min = 1; int max = 255; seekBar.setMax(max - min); seekBar.setOnSeekBarchangelistener…… -
Java – what is the syntax for creating serializable groovy classes for Jenkins workflows / pipes
When using Jenkins workflow groovy, I encountered a serialization error while trying to create an object for a dead si…… -
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-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. Lang. stackoverflowerror: the stack size in the view is 8MB
This code leads me to Java Lang. stackoverflowerror: the stack size is 8MB. Why? I want to use tablelayout and tablero…… -
How to draw arrow JavaFX? (pane)
I need to make a directed graph from undirected I can draw line edge, but I don't know how to make arrows: public clas…… -
How does Java 8 pass non functional methods as parameters
See English answers > java pass method as parameter 15 Class SimpleClass { methodA(var1,var2) { //body …… -
Java – link list class and default linked list class from scratch?
As a project / assignment student, I have been writing my linked list data structure. I want to know whether "real wor…… -
Java – the best solution for anagram checking?
I'm going through a permutation / crossword problem and want to enter the most effective check method@ H_ 403_ 7@ now,…… -
java. Lang.illegalargumentexception: class java text. Decimalformat declares multiple JSON fields named maximumintegerdigits
I'm making an Ajax call to the servlet I want the data returned from the servlet to the jsp: PrintWriter out = respons…… -
Java – onclicklistener (Android studio) in the check box
This is part of my code, including Check@R_521_2419 @( Chck@R_521_2419 @No)： final Check@R_521_2419@ Chck@R_521_2419@…… -
Java – how to sort HashMap entries by comparing values, where each value is int []?
I have a HashMap defined as HashMap < string, int [] > The value is int [], where there are only 2 numbers What …… -
Multithreading – what is the best Scala thread safe way to write to bufferedwriter?
I have a simple way to write a line of data to a file followed by a new line executed asynchronously def writeToFile(b…… -
Java – Android NFC device owner configuration: send custom attributes Is it possible?
I am developing an application and have the following problems When using NFC for device owner configuration, I want t……