Recent Posts
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Java – how to reduce short circuit on stream?
Suppose I have a Boolean stream and the reduce operation I write is 𞓜 (or) Can I write in such a way that if I encount…… -
How to write good Javadoc comments?
I am a java developer. I am interested in improving the quality of my Javadoc comments in the code and programs I writ…… -
Java – how to generate JList with alternating colors
How do I get an alternate color JList in Java? Any sample code? Solution To customize the appearance of JList cells, y…… -
Using zxing to read QRcode in Java
Some questions about using zxing I write the following code to read the barcode from the image: public class BarCodeDe…… -
Java – how to clear the border around the button?
I have a JPanel with GridLayout I have a button in each cell of the grid I see that each button is surrounded by a gra…… -
Java – parameter names in WSDL with important names
I am using jaxws RI to create a web service in Java I have implemented the following: WebService interface @WebService…… -
Java socket: dataoutputstream or OutputStream?
I'm still a relatively new socket, and I haven't seen any information about this topic To write to a connected socket,…… -
What does Java – equals (object obj) do?
I often find an equal way in different places What does it actually do? Do we have to have this important in every cla…… -
Java – how to forge initialcontext using default constructor
All, I try to do some unit tests in some old java code (no interface, no abstraction, etc.) This is a servlet using Se…… -
Java – persistent connection with JDBC to MySQL
I have an application that uses JDBC to connect to MySQL In some cases, the JDBC connection is idle for hours (or even…… -
Java – number of processor cores and size of thread pool
Many times, I've heard that the number of threads maintained in the thread pool is better than the number of cores in …… -
Java – get the inserted ID in the same statement
There is already an answer to this question: > how to get the insert ID in JDBC? six Thanks for your help. John pol…… -
Document – get the global coordinates of the node in JavaFX
How to get the actual location of nodes in the scene Absolute position, regardless of any container / conversion For e…… -
Java – how to set the distance between vertically sorted elements?
I have this Code: JPanel myPanel = new JPanel(); myPanel.setLayout(new @R_778_2419@Layout(myPanel,@R_778_2419@Layo…… -
Java – why return null (Boolean value required) as the result of ternary operator compilation?
See English answers > Booleans, conditional operators and autoboxing I'm not allowed to write public boolean x() { …… -
What is the best way to deal with low memory in Java?
We have an application that generates a new JVM and executes code on behalf of our users Sometimes, there is not enoug…… -
Java – @ before method in testrule is not called
I implemented a JUnit 4 testrule (extending an externalresource) and injected it into my test class as a @ classrule: …… -
Java – Eclipse: is there any way to force import in organize import to resolve ambiguity?
I use eclipse. Com on Android projects I updated to the lion, the problem began to appear... Try something for a few h…… -
Where to place I18N key strings in Java
When Internationalizing in Java, you can assign a string key to each message What are best practices and where to plac…… -
java – Scala：String“”vs“”
I am a newcomer to scala. I have seen the code for connecting strings in Scala, as shown below: "test " ++ "1" And I'v…… -
If instance variables still have references, will Java GC destroy the object?
I've read some Java garbage collection guides online, but I'm still a little unclear, and make sure there are no memor…… -
Java – any simple way to generate a findbug HTML report from Maven no site: site?
I tried to integrate findbugs in a maven project Does anyone have a sample POM XML generates a simple findbug HTML rep…… -
Java EE – CDI: weld-001408 dissatisfied dependencies, how to solve them?
I do a small test project of CDI My application consists of EJB ear and war, all deployed on GlassFish 4 I use hiberna…… -
Setting variables by name in Java
I'm looking for something to implement in Java: class Foo{ private int lorem; // private int ipsum; public s…… -
Java – is this vague method error eclipse Juno wrong?
I've been playing eclipse Juno today From Helios, this is a good upgrade Everything is fine except for a new compilati…… -
Algorithm – track the median of the extended array
Interview questions: The following edit gives you an array You make 2 stacks, one minheap and the other maximum heap N…… -
Confusing the use of synchronization in Java: patterns or antipatterns?
I'm doing a code review of changes to Java products I don't own I am not a Java expert, but I strongly doubt that this…… -
Java – how to publish files using jsoup?
I use jsoup to publish values using the following code: Document document = Jsoup.connect("http://www......com/....PHP…… -
Is there an alternative HTTP tunnel using RMI in Java 9?
So I see that the HTTP tunnel through RMI has been deleted in Java 9 We sell commercial Java software running in Tomca…… -
Java – where to use callable and runnable interfaces?
I am a novice in Java. I am reading the concept of multithreading. I have experienced these two concepts in various im…… -
Java – width of jcombobox
I've created one jCombo@R_231_2419 @, but it requires the full width of the frame How to set a fixed width For the fra…… -
Java – CPU usage and object wait
I use jpprofiler to analyze my application, so in the "CPU view" section, it shows that more than 40% of CPU time is s……