包含标签：Java 的文章
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Java – submit scores to Google play game leaderboard and display new rankings
I'm working on a game in which scores are submitted to the leaderboard in the activity, and new scores are displayed i…… -
Java – how to persist entities from non entity subclasses in Hibernate
I'm trying to extend an entity to a non entity to fill in the fields of the superclass The problem is that hibernate t…… -
How does the Java – runnable jar load external XML files at runtime?
(this seems to be a trivial problem, but it lasted for 2 days: () I have a runnable jar (created using the Maven assem…… -
Use enumerations to represent error messages – is this a good habit?
I want to combine my error messages and content into one file and make my code as readable as possible This is my exam…… -
Multithreading – how do I do the same calculations faster on a 4-core CPU: 4 threads or 50 threads?
Let's assume that we have a fixed amount of computing work, no blocking, sleep, I / O waiting This work can be well pa…… -
Java – ant contains external jar
I want to include an external jar. Jar in my java project I'm using ants External Jar is located in the Lib folder My …… -
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…… -
XML 1.1 documents cannot be written in Java
How do you write XML version 1.1 documents in Java? Java seems to support only version 1.0 I try to use outputkeys Ver…… -
Java – remove blocking from method
This is homework I don't want a solution, just a few links or ideas@ H_ 502_ 3@ In short, what I want to do is @ H_ 50…… -
Java: how to prevent ‘systemid’ #resolveentity (string PublicID, string systemid) in entityresolver from being absolute to the current working directory
I want to parse the following XML document to parse all entities in it: <!DOCTYPE doc SYstem 'mydoc.dtd'> <d…… -
Forms – wicket – reusable panel with Java inheritance
>I have the following Java classes: >I have two form components that map to type1task and type2task using compou…… -
Java – Tomcat installation directory is invalid It is missing the expected file or folder lib / Jasper el jar
I have downloaded Liferay portal 6.1 Solution It looks like you're trying to create Liferay V6 0 Tomcat runtime, and t…… -
Java – JNI calls static methods Is class object necessary?
Start calling static Java methods from C using JNI Specifically, after obtaining jclass (using findclass) and jmethodi…… -
Java-8 – why do filters with side effects perform better than splitter based implementations?
How to skip even lines of a stream obtained from the files Lines, I follow the accepted answer method and implement my…… -
What’s the use of E. consumer () in Java
I didn't get a clear explanation about the use of e.consumer () when I searched on the Internet. E.consumer () is ofte…… -
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……