Java
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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 – 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…… -
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…… -
Java – how do I check if BigDecimal is in a scale independent manner in a set or map?
BigDecimal's equals () method is also relatively large, so new BigDecimal("0.2").equals(new BigDecimal("0.20")) // fal…… -
How to create a file in Java?
I'm trying to implement the following operations in Java. I don't know how to: /* * write data (Data is defined in my…… -
Java – use random What is the importance of setseed?
When writing Java programs, we use setseed. Com in the random class Why do we use this method? Can't we use random wit……