Java
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Java – how do I determine the length of a graphic string?
I'm creating a graphical timeline from an excel document. I need to add a small label of the event name next to the ta…… -
Java: how to replace the last 16 bits of long with short
I have a long, short time Ex (divided into 16 bit blocks for ease of reading): > long = 0xffff 0xffff 0xffff 0xffff…… -
Java – what version of JBoss am I running?
(as the question:) how do I know what version of JBoss I am running? I'm also curious about what version of Tomcat I'm…… -
Java – why HashSet RemoveAll requires secondary operations?
I have this code to generate a HashSet and call removeall() I made a Class A, which is just an int wrapper. It records…… -
Java – controls the position of page breaks
According to the documentation, displayTag can be configured through paging banner. The placement attribute places a p…… -
Java – converts a list to a list (or any class that extends number)
I want to create a very general utility method to use any collection and convert it to a collection of user selectable…… -
Java – spring boot control target jar file name
My spring boot project has a build Description: <build> <plugins> <plugin> …… -
Is there a Java Translation Library working offline?
I really need to find a Java translation library that can be translated Solution For translating individual words, see…… -
Java – why does the LinkedHashMap class implement the map interface?
See English answers > Why do many collection classes in Java extend the abstract class and implement the interface …… -
Java conventions for accessible data (public visitors and recipients / naming)
Through the Java API, you can see countless conflicting naming and practices, which is really confusing to me For exam…… -
Java – how do I format numbers in the expression language?
How do I format and output numbers (such as long or BigDecimal) in El? For example, I want to limit some decimal numbe…… -
How to transfer files between TCP server and TCP client in Java
I have implemented simple TCP server and TCP client classes, which can send messages from the client to the server, an…… -
Java – converts the timestamp length to the normal date format
In my network application, the time of some activities of the user is stored as a timestamp in the database (in the da…… -
Java – Maven: “error reading prototype directory”, not proxy
Command: mvn archetype:generate -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false -DgroupId=org…… -
Can bufferedimage be converted into img data URI in Java?
I created a graphic image with the following example code BufferedImage bi = new BufferedImage(50,50,BufferedImage.TYP…… -
Java – the difference between sha256 and RSA and sha256, and then RSA
What is the difference between using the following two methods to calculate a signature? >Use signature GetInstance…… -
Create repeated timer reminders in Java
I want a class that changes its private variables every 2 seconds I know if I do something import java.util.Timer; //.…… -
What is the correct action to take when closing a window in Java / swing?
I wrote this test code in my customuipanel class: public static void main(String[] args) { final JDialog dialog = …… -
Are there any open source java reflection tools or jars?
Are there any open source tools or jars to handle reflection in Java? I dynamically pass the method to a class, and I …… -
Java – how to make spring @ retryable configurable?
I have this code @Retryable(maxAttempts = 3,stateful = true,include = ServiceUnavailableException.class,exclude = URIS…… -
Java – how do I get the response code from volleyerror?
I'm looking for a way to get the response code of the volleyerror thrown My errorlistener looks like this: Response.Er…… -
Java – powerful file transfer from mobile devices to servers
What I need is a file transfer solution (Library) from mobile devices (IOS, Android) to servers (PHP) The basic requir…… -
Java – spring data – mongodb finds the nearest location around the route
I have a model that contains geojson points It is easy to find the closest spring data, but how to retrieve the neares…… -
Java: receive multipart HTTP response
I am writing a java client application to receive real-time M-JPEG video from an IP camera The video is sent by the ca…… -
Java animation clip when not moving the mouse cursor
I have a very simple animation, a large font of text constantly (pixel by pixel) moving to the left First convert the …… -
Java – use reflection to access constructors from abstract base classes
I'm playing java reflection I have an abstract class base with a constructor abstract class Base { public Base( St…… -
java – LinkedBlockingQueue put vs offer
I have a linked blocking queue and I am performing insert and delete operations I need to know which is better to put …… -
How to map MySQL char (n) columns to instance variables using JPA / Hibernate annotations?
For the "language" column in the MySQL table of type char (7), I encountered a JPA / Hibernate mapping problem In my e…… -
JUnit – select the specific test run in gradle
I'm trying to solve our chaotic test run. Unfortunately, I've just graduated We currently have TestNG and JUnit, and I…… -
Using java zip files: are there any restrictions?
I am creating backup routines for Java applications I'm also testing Apache commons compression to tar GZ, but its fil…… -
Java – Maven: compile and test at different source levels
I am currently developing a project to run on embedded devices The device runs Java ME JRE (equivalent to Java 1.4) Be…… -
Java – restore the old style of NetBeans 7.2 bookmark navigation in any way?
NetBeans 7.2 changed the way bookmarks work Before Ctrl Shift and Ctrl Shift Move the focus up and down in the same fi……