Java
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Java – asynchronous socket I / O on Android
Is there a good mechanism for asynchronous I / O using sockets on Android? I know the existence of NiO channel, but it…… -
Java – SWT FileDialog: select a directory instead of a file
Can you use SWT FileDialog to select a folder instead of a file? Solution You can use directorydialog Here are some sa…… -
Java – sharing databases between threads
I have an application that is multithreaded and works properly However, it encountered lock contention (looking at the…… -
Java – how to convert a string to a jsonobject
I'm using httprequest to get JSON from a web to a string This may be simple, but I can't seem to convert this string t…… -
A “standardized” approach to the Java EE application lifecycle
When developing Java EE applications, I often encounter "problems" to stop when the application starts, and so on Now …… -
Java – enable CORS to send requests from angularjs to Jersey
I tried to publish a JSON document from the angularjs application to the Jersey rest service If the request fails, not…… -
Why do you need parentheses in catch blocks in Java?
In Java, if we have to execute a statement after if, or if we don't have to execute a statement for parentheses We can…… -
How do I create resizing animation for a JavaFX stage?
I've been trying to do a scaling transformation for the JavaFX phase to replace the current scene of the application's…… -
Is a Boolean attribute name prefix “is” still a valid java bean?
I just noticed something I didn't know private boolean isCertified; public boolean isCertified() { return isCer…… -
Java – can I get the next element in the stream?
I'm trying to convert the for loop to function code I need to look forward to a value, or I can look at a value Can I …… -
Java – BigInteger or BigInteger?
In Java, most basic types are signed (one bit for / –), so when I exceed the type limit, I can get unexpected results,…… -
Java: can a parent class statically retrieve the class name of a child class?
Referring to Java, I want to know the class name of the current class statically A is the parent of B I think there is…… -
Java – override getpreferredsize() interrupt LSP
I always see suggestions to rewrite getpreferredsize () instead of setpreferredsize () on this website, as shown in th…… -
Single iteration = > multiple output sets from Java to Scala
I'm trying to convert some java code into Scala code The challenge is to ensure that the converted Scala code does not…… -
Java – how to use restlets to enforce “sessions” in restful web services?
I am a new feature of restful web services and restlets We only have experience in building servlet based Web Applicat…… -
Java – unload static fields
I have a Java class that uses complex static fields and requires special operations as close () so that they can be sa…… -
Search xlsx and XLS files using java
I have a large xlsx file, and I have to implement a large amount of data for search options. I have used Apache POI ja…… -
java – getClass(). getClassLoader(). Getresourceasstream() is caching resources
I have a resource (speed template) that I think can be interchanged in the development process However, getClass().get…… -
Converting Java swing to a web-based application
I have a Java Swing application I want to convert to a web - based application What is the easiest way? Solution Ajax …… -
Why does wait () set the state to 256 instead of the – 1 exit state of the forked process?
I want to return an integer value from the subprocess However, if I use exit (1), I get 256 as output Exit (- 1) gives…… -
Java – loads animation gifs from jar files into imageicon
I'm trying to create an imageicon from the animated GIF stored in the jar file ImageIcon imageIcon = new ImageIcon(Ima…… -
Java – use generic wildcards instead of interfaces
If you want to store an array of objects of type myinterface, is it acceptable to use the second form of the first for…… -
Java – CDI is missing @ viewscoped and @ flashscoped
Why are the @ viewscoped and @ flashscoped annotations missing from Java EE 6 CDI? (especially the former makes me fee…… -
Java – how to create a circle with numbers?
I'm using andengine to program Android games I want to create a circle with numbers, as shown in the figure below: Sol…… -
Java – running startup. Java in Linux SH rejected [closed]
I tried to run Tomcat 6 in Linux when I called startup SH, I'm in Catalina See this error in out /home/***/apache-tomc…… -
Java – hibernate Eclipse Plug-in
Anyone can provide a good Eclipse Plug-in for hibernate The plug - in should take care of generating POJO classes and …… -
What HTML tags does the Java – swing component support?
Many swing components support embedded HTML, but I can't find any official documentation on this topic (all of sun's H…… -
Java – @ sign what to do?
I've seen the (@) login groovy file. I don't know whether it's groovy or Java I tried to search Google, Bing and duckd…… -
Java – reads the httprequest content from the spring exception handler
I use spring's @ exceptionhandler annotation to catch exceptions in my controller Some requests save post data as a pu…… -
Java – Implementation of pop-up window method in IntelliJ
I am using IntelliJ 2016.1. I want to know if there is a shortcut to view the method body in the pop-up window instead…… -
Java – how to identify the cause of JNI global reference memory leak?
I am using Tomcat and still refer to the classloader instance of my web application after stopping my web application …… -
Java – how to insert the current date and time in the database using SQL?
I use the following code, but the datetime field in SQL is represented as: 2005-04-08 00:00:00 I also want to have tim……