Recent Posts
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JSF – how to generate javax without ‘ID’ and ‘autocomplete’ attributes faces. Viewstate hide field
This is what I have in the output HTML document (generated by JSF 2.0 / mojarra 2.0.3): @ h_ 502_ 2@ My document shoul…… -
Java – Blank Icon in Windows 10 notifications
My java application displays its icons on the system tray using code that looks more or less like: Toolkit mainToolkit…… -
Java – unable to connect to spring 4 websocket using sockjs stomp over socket
Try using sockjs to use spring 4 websocket with stomp on the socket My configuration: websocket. XML – part of the spr…… -
Data type of Java arithmetic calculation result
In Java, I know that the data type of arithmetic calculation results depends on the data type of numbers involved in t…… -
Java – generics using arrayadapters
I encountered a problem trying to create a generic arrayadapter This may be related to my limited understanding of gen…… -
Compile my project using java 7, but run my tests in gradle using java 8
I'm currently deploying my war to a WebLogic Server that supports Java 7, but I want to use Java 8.0 in my selenium an…… -
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 – 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…… -
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…… -
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…… -
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 – 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. net. Socketexception: invalid request: invalid mode
I have an application running on Google App Engine, which is the back end of Android applications It is basically a br…… -
Java – finalized has 2.5 gigabytes of memory in 4 gigabytes
I have read many articles about how finalizers work. Here is my understanding: if a class has implemented the finalize…… -
How to make Java hashtable Containskey is applicable to array?
I'm sorry to ask this question, but I'm new to Java Hashtable<byte[],byte[]> map = new Hashtable<byte[],byte[…… -
Java – in identity The @ picketlink annotation class is not used in login()
I'm trying to use the @ picketlinked class that extends baseauthenticator My setting is about wildlife 9.0 2. Final ea…… -
Java EE – what Maven dependencies can I use to create a separate JMS client for GlassFish?
I want to create a very simple JMS standalone client for JMS topics hosted on my GlassFish server My project was built…… -
Java – how to rerun failed tests in Espresso? – Brainstorm
I want to find out how to rerun failed tests using espresso I think from the common JUnit test cases, this is a little…… -
Java – how to use jet’s let encryption certificate?
I want to use let's encrypt certificates and a large number of jetty servers One problem is that the certificate from …… -
Java – rxtx cannot list or find ports under Windows 7 64 bit
good morning, I'm having trouble using and / or installing rxtx on Windows 7 64 bit I used to have no problem using it…… -
Java – a 0-byte file appears when capturing a screen through screensap
I had trouble capturing the screen of a non - rooted phone I tried this command on my computer: adb shell /system/bin/…… -
Java – conditional insertion using spring JPA / Hibernate
I am developing a project running in a cluster environment with many nodes and a database The project uses spring data…… -
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 – 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 – 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…… -
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 …… -
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…… -
Java – what is the purpose of the original getter / setter in the field?
This is explained in the documentation of the public object get (object obj) method of the field class And for public …… -
Java – although the property is set, the canvas is not drawn correctly
I just made two drawings and tried to make one look the same as the other, but I had no luck For screenshots, the top …… -
Java – what is the purpose of the original getter / setter in the field?
This is explained in the documentation of the public object get (object obj) method of the field class And for public …… -
Javafx8 tableview multisection returns one of the selected items to null
The tableview multi option returns one of the selected objects as null This doesn't happen every time, but when I try ……