Java
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Java – information about @ inject in CDI / weld and di / Guice
I tried to distinguish between (some) CDI and di About @ inject, CDI (jsr-299) only brings di (jsr-330). What is it? C…… -
Java – lists implementations that do not resolve casts
I created my own array - based list implementation, and it doesn't limit invalid parameters If I use cast to create my…… -
Time zone in Java – webapp
I want to know the best practices for dealing with time zones in web applications >When user1 adds a new date, it i…… -
What does the name of an object in Java mean (array, ArrayList)
See English answers > java arrays printing out weight numbers and text 10 ArrayList<Integer> myList = new Arr…… -
Java – constructor printwriter (bufferedwriter) undefined
I'm trying to create a report that I show syntax errors be used for: new PrintWriter(new BufferedWriter(new FileWriter…… -
Java – JPA and first level cache, what’s the point?
Entitymanager maintains the first level cache for retrieved objects, but if you want to have a thread safe application…… -
Java – call thread What kind of corruption may occur when the stop method is used?
See the English answer > thread Stop () – deprecated 4 I just don't quite understand What does an inconsistent stat…… -
Java – packed numeric array
I have a large array (~ 400.000.000 entries) with integers of {0,1,..., 8} At present, I use byte array and save 2 num…… -
Java – how to add data in a list item in Android
I am a new Android Developer I am developing a sample application I want to add some data to the object list My mainac…… -
Java – close a runnable joptionpane
I have this runnable window: EventQueue.invokelater(new Runnable(){ @Override public void run() { op =…… -
Java – runtimeException: the buffer is insufficient to hold pixels
I received a bitmap in the byte array through the socket, I read it, and then I want to set it to OS. In my applicatio…… -
Java – unrecognized propertyexception when reading yaml file
When using the dropwizard, My dropwizard service reads config YML file public void run() throws Exception { this.r…… -
Java – jformattedtextfield instead of jtextfield
What is the difference between jtextfield and jformattedtextfield in Java? Solution Jformattedtextfield differs from j…… -
Java – get the seed of the random object without passing in the seed?
Does a random object always contain a seed, even if it is not given one? If so, can you get this seed? Motivation: I w…… -
Java – move background image in swing
Hello, I'm a novice programmer. We have a project We created a simple racing game with a moving background, but I insi…… -
Java – confused about extending the generics of existing enum types
Question 1: I'm a little confused about these codes: public class MyClass1 <E extends Enum<?>> { // ..…… -
Java – string index using replace all is out of range
How to replace mapdir surrounded by < >? To a certain string? String mapDir = "D:\\mapping\\specialists\\ts_gpc\…… -
Java – find K minimum integers in the array
This is my code, which is suitable for finding 1-7 minimum integers, but 8 and 9 When I find the eight smallest intege…… -
Java – is there a stateless version of JPA entitymanager?
Hibernate has a stateless version of its session: does JPA entitymanager have something similar? That is, an entityman…… -
Java Spring JPA FetchMode. Join does not use join
I use JPA to have a very complex model structure in spring When using spring data to query my database, I expect a que…… -
Java – NullPointerException in Avro reflectdatumwriter
I have a specific problem with Avro serialization of Java objects I have POJOs generated from the XSD schema, and then…… -
Creating dirty methods for threads in Java
I recently started to delve into multithreading in Java In the process of exploring things, I found that there are two…… -
Java – how to convert char [] to int?
I have a problem. I need to take an array of characters (only composed of numbers) and print its value as an integer p…… -
Java – different methods of passing parameters: String args [] or – D?
I've seen many Java use the - D option to pass some parameters The more familiar method is to pass the parameter with …… -
Can I add Ruby gem / module like a Java jar file?
I use eclispse Kepler and dltk plug-ins to make ruby I can't "request" the nokogiri module because eclipse can't find …… -
Java – more appropriately, amortized o (1) vs o (n) for inserting unordered dynamic arrays?
This belongs to stackoverflow COM / help / on topic's "software algorithm", in this case, is a software algorithm that…… -
Delete the object created in ArrayList in Java loop
I'm trying to delete the objects I created in ArrayList: turtles.add(new Turtle()); I want to get rid of the last turt…… -
Java – remove the back arrow button from the action bar
In my android project, whenever I go from first activity to second, I get a left arrow button, followed by some text i…… -
The Java input date from scanner is on one line
I'm trying to read the date from the user to pass to the Gregorian calendar variable At present, I have an embarrassin…… -
Multithreading – do I have to signal an anonymous thread if the main thread completes?
Is it necessary to explicitly stop all threads prior to exiting a Win32 Application? 5 procedure TForm1.FormCreate(Sen…… -
Java – list iteration – General Logic
I have a bean list (list < aclass >), from which I create two sub lists based on some logic, including checking …… -
Java deadlock when synchronizing on local resources?
I see the problem of multiple thread deadlock in the same line of code I can't understand why the thread is blocked on……