Recent Posts
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Java – wicket: hide comments in HTML
JSP supports the syntax of <% - Comment -% > annotation, which is a way to annotate the code so that it is not i…… -
Java – the behavior of the statement returned in catch, and finally
public class J { public class J { public Integer method(Integer x) { Integer val = x; …… -
Java date annual calculation is closed two days a year
If you can imagine, this will cause Y2K style errors in my software Strangely, the annual calculation only takes place…… -
Java – grouping in a simple aggregation storm topology
I'm trying to write a topology that does the following: >Subscribe to a twitter feed (based on keywords) > an ag…… -
Intrusive list implementation Java?
Is there a double linked list class that can be used for any (well implemented) intrusion of Java? Or should I be my o…… -
Java – jdk8 with – source 1.7 [default method]
I have the following classes public class zoneddatetimeToInstant { public static void main(final String[] args) …… -
Do you need a java version of Maven dependency?
I developed and built my java application using Maven I need to support Java 1.6, so I use the following properties: &…… -
Java – what are the new features of eclipse Helios?
What are some new and noteworthy features in eclipse Helios, especially for the Java ide? I looked around the website …… -
Java: get any day of the week from the calendar
Using the calendar, I can get the week, year and all the details of the day How can I browse a specific day that week?…… -
Java – why change the value from float to double?
I've been trying to find out why, but I can't Look at the following example float f; f = 125.32f; System.out.…… -
Java – what is the time complexity of this sort method?
I wrote this course: public class SortingObjectsWithAngleField implements Comparator<Point> { public int co…… -
Java – disables certain aspects during unit test runs
I have integration tests (load context) and unit tests running together My code uses spring compile time weaving My pr…… -
Java – LRU caching using LinkedHashMap
I try to use LinkedHashMap to implement LRU caching Note that if you re insert the key into the map, the insertion ord…… -
Multithreading – what is the difference between deadlock prevention and deadlock prevention?
I've heard of these two terms. Are they the same thing or different? Solution You can see: Avoid: do not share resourc…… -
Java – get the class name of the logging record
To log errors for a given class, I am accessing the class name: private static final String CLASS_NAME = MyClass.class…… -
Java – can IntelliJ generate getters without “get” prefix?
IntelliJ has a cool feature to generate Java getters For example, for a field private final string foo, it will genera…… -
Java – use jsch to put files into a remote directory and create it if it does not exist
I want to copy files to a remote directory using the jsch library and the SFTP protocol In the API documentation, http…… -
Java – why do I get stackoverflowerror
public class Category { public class Category { private Category parentCategory; private Set<Category> …… -
How to get the name of an object in Java?
Like this, a = new a (), how do I get a name? (from a) get the string "a"? A JPanel contains some jtextfields, and a m…… -
Java – pop up dialog from background thread
I need a pop-up dialog box. When I receive messages from different threads, the dialog box should not depend on activi…… -
Java – what are the benefits of using spring El in ognl?
I want to know what mobile spring uses spring El in ognl in its web process products: http://static.springsource.org/s…… -
Lambda expressions in Java 8
I want to use a lambda expression instead of a for loop to generate a list of numbers So let's want to generate a list…… -
Java – sever: exception start filter CORS
I deployed restful web services on Tomcat 'Web services work normally on clients / servers in the same domain Scenario…… -
JavaFX could not load @ font face font because com sun. javafx. css. StyleManager loadStylesheetUnPrivileged
I have asked a similar question here, but it seems unclear, because I have a lot of code in the project and can't be p…… -
Use Java regex to delete every other character in the string
I have this homework problem. I need to use regular expressions to delete every other character in the string On the o…… -
How to program monadically in Java 8 while achieving comparable performance?
Is monadic programming slow in Java 8? Here is my test (create a new instance for each calculation using any of the ri…… -
Java pop ups that require data
What code would I use to let users enter their grades in a pop-up window? When I press JButton, I want to pop up a sma…… -
Java – pack, but don’t make it smaller
I have JFrame with gridbaglayout Users can resize this window In addition, he can perform some editing operations to c…… -
Java – play! Is framework 2.0 suitable for creating rest APIs?
I have developed a rest API using play! Frame 1.2 4. I like the frame very much The simple and fast development cycle …… -
Java: get a process with a given PID
Say I have a currently running process known, how can I convert it into a process object in Java? int pid = getPid(); …… -
Java – opens an excel file using the default program
My program successfully created and filled excel (. XLS) files Once created, I want the new file to open in the system…… -
Java – add arrays. Java Sort() increases time complexity and space-time complexity?
There are array related problems, which require that the time complexity is O (n) and the space complexity is O (1) If……