Recent Posts
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Combining two functions in Java 8
In the isreadytodeliver method, if all products in the order are available (productstate. Available) and the order sta…… -
Java – what kind of maze solving algorithm is this?
I tried to find out if this algorithm was a * (A-star) algorithm or something, but I was still confused Stack<Cell&…… -
Location parameter problem in Java – JPA Native Query
I'm trying to: String sql = "SELECT email FROM users WHERE (type like 'B') AND (username like '?1')"; List results = e…… -
Lombok is related to Java 8
I just upgraded to IntelliJ idea 14 and Java 8. I also want to upgrade my project to Java version 8 and start using so…… -
Java – how do I force an OutputStream object to refresh without closing it?
My problem lies in the following assumptions. I hope these assumptions are correct, because I believe these are what I…… -
Java class comparator?
I want to compare two Java classes class ClassComparator implements Comparator<Class> { @Override public…… -
Multithreading – OO design pattern for multithreading synchronization
Is there any generalization of objects and data and thread interactions for a given design pattern name? Obviously, sy…… -
How to get webelement text using selenium
See the following elements: <div class="success"><button class="close" data-dismiss="alert" type="button">…… -
Java 8: why does the functional interface in Java 8 have an abstract method?
As we know in Java 8, new concepts and functional interfaces are introduced The function interface has an abstract met…… -
Java – find the next occurrence of the day of the week in jsr-310
Given a jsr-310 object, such as localdate, how can I find the date of the next Wednesday (or any other day of the week…… -
Flickr API JAVA – flickrj
I want to use Flickr Java API (flickrj) to download a group of photos of specific users in Flickr Does anyone know how…… -
How to write large byte ByteBuffer to small byte in Java
I currently have a Java ByteBuffer, which already has data in big endian format Then I want to write a binary file as …… -
Java – the spring boot rest controller returns 404 when deployed on an external Tomcat 9 server
I have a spring boot rest web application that runs perfectly on an embedded server However, in accordance with the bl…… -
Java – weak reference instead of getactivity () (Android avoids memory leakage)?
In order to avoid memory leakage, I wrote the following method, which will be used for activities, mainly for fragment…… -
JavaFX – how does cellvaluefactory() and cellfactory() work? What’s the difference between them?
I want to know about these methods cellvaluefactory(); And cellfactory(); When will it be called? What is their purpos…… -
Java – set the location of Jfilechooser
How do we set the location of the Jfilechooser window? I tried the setlocation () and setbounds () methods, but it did…… -
What does the Java – cvhaardetectobjects () method do?
Some experts can explain whether I can use the cvhaardetectobjects () method to detect the box and obtain the width an…… -
java – ClassNotFoundException Android
So I encountered a problem when dealing with Android programs I have a class that converts XML strings into Java objec…… -
Java – NullPointerException at the end of the file
What I want is to access the EOF by reading the command line from the console and typing Ctrl z from the BufferedReade…… -
Java – hibernate query cache is automatically refreshed when external updates are made?
I am creating a service with read - only access to the database In Hibernate, I have a query cache and L2 cache enable…… -
java – JNI. How to get jstring from jobobject and convert it to char*
This is what I have done so far: JNIEXPORT jint JNICALL Java_Tier3_NativeMethods_totalPalletsIn( jnienv *e…… -
Time complexity of Java Pascal triangle algorithm
Responsible for solving the following problems (Pascal triangle), which looks like this [ [1],[1,1],2,3,4,6,1] ] …… -
When using JSF primefaces, in Java Unreadable property on lang.string type
I'm trying to use the demo code in the site to implement deferred loading data in the data table PrimeFaces Lazy loadi…… -
Is there any reason to implement Java for other types util. Comparable？
Classes that implement comparable < T > usually implement it for themselves, such as class MyInteger implements …… -
Java – use another list to sort the list
Can the Java collections sorting method be used with a comparator because it sorts one list to sort another by the ind…… -
Java – how to add a gap at the edge of a JButton?
I want to keep the default borders on my jbuttons, but also put a blank area around them I'm using vertical @ r_ 518_ …… -
Java – allows you to provide maps for equals comparator and hash functions, respectively
When trying to model polynomials, especially their multiplication, I encountered the following problems During multipl…… -
Returns c# the dictionary in a multithreaded environment
I have announced a dictionary of dictionaries: Dictionary<String,Dictionary<String,String>> values; I have…… -
Java – use pdfbox 1.8 8 visual signature
I'm trying to use visual signatures and pdf@R_486_2419 @Make PDF I have two streams, it seems pdf@R_486_2419 @Only fil…… -
Java – download files using asynctask
I tried to download a file with asynctask, but it didn't work, no error message or nothing, just didn't download the f…… -
Extract flow graph from Java stream >
I have a stream (this format is not set by me and cannot be changed) for example Stream<String> doc1 = Stream.of…… -
How to send int through UDP in Java
I'm trying to write some code to send a single int through UDP My code so far: From: int num = 2; DatagramSocket sock……