Java
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Java – timed out after 30000 milliseconds while waiting for a server that matches the writableserverselector
I have seen this problem in many forums, but none of them can solve my problem I'm trying to insert the sample documen…… -
Converting an image to a cylinder in Java
I didn't find any examples in OpenCV to convert a flat image into a cylinder in Java. I wanted it to render the image …… -
Effective method for creating string from char [], start, length
We are using java Sax to parse very large XML files Our roles are as follows: @Override public void characters(char ch…… -
Java – prevents the use of non thread safe methods in a multithreaded context
Is there any way to throw an exception when a user tries to use a class's non thread safe method in a multithreaded co…… -
Java – SWT problem using syncexec()
This is my first question on stackoverflow I'll try my best to explain the problem I have a SWT application with foreg…… -
Java – Hibernate: automatically split tables every month
I'm working on a spring MVC application with PostgreSQL and hibernate. I have several tables with more than 100000 row…… -
Java – why are some methods on jconsole disabled
I can see that some methods on jconsole are disabled The following shows com sun. management. Screenshot of threadmxbe…… -
Java – realm: create a relationship by ID
Suppose I have several domain objects (tables) with many connections between them, and I haven't pre filled all the ob…… -
Java – how to get intersections from shapes in elasticsearch
I have stored the path in elasticsearch as polygon Now that I have a circle (a point and a radius), I can check whethe…… -
Java – how to select the correct list implementation?
From this codereview answer, I also tend to use fairly large ArrayLists, and I don't see the logic to choose other lis…… -
Multithreading – Perl threads: how to make a producer?
I have a feature that runs very slowly I need to enter this function in the main part of the program So I want to do s…… -
Java – hibernate does not get the null value of the field in the database record
I use the following hibernate code to get data from the database SessionFactory factory = null; Session session = …… -
Java – MapReduce job in headless environment failed n times due to am container exception started by the container
When running a map reduction job in a headless environment in Mac OS X (for example, when running a job as a specific …… -
Java – can log4j restore integrity from disk?
We run several Java application servers and several applications here They all use log4j to log into the same file sys…… -
Pending knockout js 1.2. Binding in 1
Are there any options to suspend and resume binding in the knockout? Version: knockout js 1.2. one Our need to suspend…… -
Java – Apache Felix Shell Using SSH
How do I use Apache Felix and SSH? I want to use SSH to access Felix shell from a remote computer I know there is a te…… -
How do I interpret runnable in a java thread without a stack trace?
I am debugging legacy Java applications, and the thread dump (obtained through jstack) contains some entries as follow…… -
Java – SBT: how to package instances of classes as jars?
My code is basically like this: class FoodTrainer(images: S3Path) { // data is >100GB file living in S3 def train…… -
Java – using HashMap and custom keys
Quick question: if I want to use a HashMap with a custom class as a key, do I have to override the hashcode function? …… -
Using Java util. Advantages and disadvantages of timer and quartz scheduling?
I have to write an application that performs a series of tasks: >The task runs at 0200 hours every day. > The ta…… -
Java – inheritance relationship between square / rectangle (with constraint invariants) sharing quadrilateral cardinality
I have an interface polygon, and then I have a quadrilateral Then, I have two classes, square and rectangle, which ext…… -
Java – how to use the switch () statement to convert numbers to letter levels?
It's not homework, but it's a practice for the teacher to help us study the exam But I won't hand it over to the teach…… -
Basic firebase Java connection
I tried to establish a basic connection with firebase in a Java application, and I couldn't get any response at all us…… -
“Restful” Java Web MVC framework
The application I'm developing will "respond", communicate asynchronously and pass a lot of JSON back and forth I need…… -
Compare two integer arrays using java stream
I have two arrays of integers, for example – int [] a = {2,7,9} int [] b = {4,2,8} I want to compare it element by ele…… -
Java – how are software and game templates designed?
Please don't mind my question, because I know little about software, because I come from the network perspective For e…… -
“Java form generator” from the given WSDL file
I'm trying to develop a form generator in Java where users can write a WSDL URL and get it Combo@R_522_2419 @List of o…… -
How can I use the Java operator “|” in kotlin?
How do I use this operator? int a = 5 | 10; int b = 5 & 10; It can be used in Java, but you can't see it in kotlin…… -
Java hashcode from multiple fields
In view of such a class: class MyObject { private String id1; private String id2; @Override public boolean eq…… -
Java streams – filter previously filtered values
I am trying to use Java streams and try to find out the possible contents and their advantages and disadvantages At pr…… -
Java generics: how do I specify a class type for generic types?
I have a POJO specified as: MyClass < U >, where u is a generic type parameter This method is implemented as fol…… -
Java Swing saves and loads workspace / settings
I have a Java Swing application that contains a stack of frames, and these frames mainly contain tables that display a……