Java
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Java – JMX: how to prevent classloader memory leakage in servlet container?
I want to know whether or how to handle MBeans registered directly or indirectly from applications deployed on servlet…… -
JSF – how to handle multiple submissions before rendering the response?
According to the test report, if the response speed is not fast enough, we may press a button many times, resulting in…… -
Java – understanding managed beans / backing beans
See the English answer > difference between managed bean and backing bean11 I have some trouble, understand correct…… -
Ignore attributes when deserializing Jackson JSON in Java
In the example Class Person{ String name; int age; } If the JSON object is missing the attribute "age", { name…… -
Java relative file path
I have a Java problem that I've been having trouble with: what's a good way to indicate relative file paths Let me be …… -
How does the JavaFX gridpane layout set margins for elements in rows?
I am using the gridpane layout to locate the content in the application I want to know how to set margins for elements…… -
Java – should data sources be defined in the application or application server?
I have developed applications for two different teams (running on the JBoss server) One team has a data source configu…… -
Java – the SWT browser focuses on the next and previous highlighted text
I am developing a small application with SWT browser widget I'm emphasizing a search text <a id="xyz" href=''>&l…… -
Java – display animation BG in swing
Animated (looped) gifs can be displayed in jlabel or HTML (formatted text components, such as jeditorpane) and seen lo…… -
Java – is there a way to force checkstyle to ignore specific warnings in the source code?
See the English answer > how to disable a particular checkstyle rule for a particular line of code? 5 Does checksty…… -
Java – combined code generation using eclipse
Effective Java and other sources suggest that we should consider using composition over inheritance I often find mysel…… -
Distinguish between single click and double click in Java
I searched the forum and saw this Code: public void mouseClicked(MouseEvent e) { if (e.getClickCount() == …… -
An incompatible type error occurred while using code generated from the kotlin data class
If I decompile the data generated by the data class state Class file (Val B: List < array < int > >), then…… -
Java – memory exception analysis hprof file dump
This is related to this problem java. lang.OutOfMemoryError at android. graphics. BitmapFactory. nativeDecodeAsset(Nat…… -
Java – the problem of deleting cookies in servlets
I try to use this code to delete cookies in the servlet Cookie minIdCookie = null; for (Cookie c : req.getCookies()) …… -
What are the benefits of Java – lambda expressions for multi-core systems?
Java tutorials of lambda expressions say: My question is, according to multi-core systems and parallel / parallel prog…… -
Java – combining jax-rs and jax-ws
Is there a framework, library or technology that combines jax-rs and jax-ws (or equivalent) into a composite service, …… -
Implement Java util. Random. nextInt
This function is Java util. Random. It returns a pseudo-random int evenly distributed between 0 and a given n. unfortu…… -
Maximize Java heap space
I try to use a very large square matrix in Java, n = 1e6 or greater Matrices are not sparse, so I don't see many ways …… -
Java – Guice runtime dependency parameter re injection
About Guice I'm still learning it, but I can understand the basics This question has been asked on the Internet severa…… -
Java generics: inferring types from two parameters
Suppose I have a simple way to handle two lists: public static <B> void foo(List<B> list1,List<B> li…… -
Java EE – warning: JACC: for URL pattern XXX, all methods except the following are found: post, get
In javax faces. webapp. In the facesservlet document, My application does not rely on other HTTP methods (except get a…… -
How do I use function annotations to indicate whether a function requires a function as an argument or returns a function?
You can use function annotations in Python 3 to indicate the type and return value of parameters, as follows: def myfu…… -
Java – how to deploy webapp and create its resources
I had to do this before deploying "myapp. War" on GlassFish 4 >Create JDBC connection pool (/ WEB-INF / glassfish-r…… -
Java – SQL Server 2016: enable TLS 1.2 for SQL server connections
I run SQL Server 2016 on Windows 2012 R2 and I apply tlsv1.0 2 and restarted the VM, https://support.microsoft.com/en-…… -
Java – unable to find the spring namespace for jax-ws
I want to integrate Jax - WS into my spring project Find this link: I adopted it and integrated it into my Application…… -
Java – priority between hibernate jpavendoradapter and attributes in JPA property
I have the following configuration in an application spring JPA hibernate. I use packagestoscan to avoid using the fil…… -
Java – mybatis “or” standard
I want to create a query with mybatis, which will produce the following: SELECT first_field,second_filed,third_field W…… -
Java – akka: send back outside the actor system?
I have the following drivers / main classes to encapsulate my akka program: // Groovy pseudo-code class FizzBuzz { …… -
Java – regular expressions and escaped and non escaped separators
Problems related to this I have a string a\;b\\;c;d Looks like in Java String s = "a\\;b\\\\;c;d" I need to split it w…… -
How do I validate documents against Schematron schema in Java?
As far as I know, jaxp by default supports W3C XML schema and relax ng from Java 6 I can do it at Schematron Some APIs…… -
Multithreading – garbage collection in Perl threads
The question is curiosity because one of the following two items works I'm using @ L_ 403_ 0 @:: magick resizes a larg……