Java
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Java generic return type is not used in parameter
In the Java library, I encountered a method that uses a generic return type, which is not used in any way in the param…… -
Java NiO zip filesystem is equivalent to Java util. zip. Setmethod() in zipentry
I have some existing code to create a zip file in ePub 2 format, which works properly When trying to update my code to…… -
Parsing ECC public / private key in Java (generated by GPG CLI)
I am trying to convert the ECC GPG key of armor to the corresponding Java class To generate the key pair I am using: G…… -
java – Deflater. Deflate and small output buffers
I saw a strange situation, using java 8u45's small output buffer and Java util. Deflater. When the deflate (byte [] B,…… -
java – System. Is the value returned by currenttimemillis() affected by the day light savings and leap second adjustments?
I know system Currenttimemillis () gives the millisecond time since the era, and it is very sensitive to the system wa…… -
Java – handling new exceptions in anonymous inner classes
I have the following situations: /** Get a list of records */ public ArrayList<Record> foo() throws BazException…… -
JavaFX printapi bad papersource
I am using JavaFX Print dialog to customize print jobs All properties are stored in the printerjob#jobsettings variabl…… -
Java – is there a good way to abstract the GUI, so you can use SWT or swing?
I am writing an application with SWT GUI, but I hope the end user can choose between SWT and swing I've tried to abstr…… -
jsf-2 – javax. faces. Facesexception: unable to parse the result of navigationcase
I'm at / template / template There is a template. On XHTML XHTML file <h:head> </h:head> <h:body> …… -
Java – hibernate – how to keep only the parent node and keep the child node unchanged
Someone can help me understand how to configure hibernate to do what I want I have a parent entity "apartment", which …… -
Copy all properties of one POJO to another in Java?
I have some POJOs of third-party cans, which we can't disclose directly to customers ThirdPartyPojo. java public class…… -
Hot deploy Java ear to minimize or eliminate application downtime on the server?
I heard that this is what javarebel does, but is there any other good way to deploy the new version of ear while allow…… -
Java – JWT signature does not match local computed signature
I'm using it JwtBuilder builder = Jwts.builder() .setId(user.getEmail()) .sign…… -
Java – there is no padding on spring social Facebook
I'm trying to get a user location on spring social Facebook: Facebook fb = ((Facebook) connection.getApi()); Page pg =…… -
Java – mitosis of human cells
I am writing the genetic process in Java for my project. I want to simulate the mitosis of human cells Human cells con…… -
What is the scope of Java – @ enabletransactionmanagement?
I'm trying to figure out where to put the @ enabletransactionmanagement annotation in the right place in the case of m…… -
Java – run a script to create a table using HSQLDB
I use HSQLDB to run unit tests that require database access At present, when I want to create a table for a specific t…… -
Java – tab based autocompletion in console applications
I am writing a console based Java application. In this application, a user-defined command will be displayed to prompt…… -
Java – maven, Jenkins – how to build projects into different test environments?
I have a java project with JUnit test, which needs to be run on different test environments (DEV, staging, etc.) throu…… -
java. io. IOException: error = 2, there is no such file or directory
I tried to use runtime getrunTime(). Exec runs a java program from another Java program code: String java_home = Syste…… -
Java – maximum accuracy loss of double addition / subtraction at one time
Is it possible to establish or even roughly explain the maximum precision loss when processing two double values in Ja…… -
Java clipboard owner purpose?
I wrote a Java application that copies strings to the system clipboard Constructor use Clipboard.setContents(Transfera…… -
Javafx-2 – in javafx2 2. How to set the font size of the text entered in the input field and header?
In my javafx2 In the fxml program, I found that the font could not be extended correctly As a result, the header and i…… -
Java – run the cucumber test using JUnit categories through Maven
I have a maven project with multiple modules and a common parent module In this project, some unit tests run with JUni…… -
Dormancy – trying to understand the importance of the owner of a one to many relationship in orm
Although my question is specific to the way entity relationships are described in the play framework using hibernate, …… -
Java – how do I track orphaned JDBC connections that are not closed?
We found an error in the old code that did not close the connection This is a simple solution, but I want to know how …… -
Java – BufferedReader in multi-core environment
I have eight documents Each of them is about 1.7 GB I'm reading these files into a byte array, and the operation is fa…… -
Java – how to implement Hough transform?
How to implement Hough transform on text image? I'm looking for pseudo code (which will eventually be in Java) Here ar…… -
JavaFX layout with parent extensions
I use JavaFX instead of swing in my project because of enhanced multimedia, webviewer and the possibility of using vis…… -
Java – how to set the spring logging level during testing?
See English answers > spring boot test ignores logging Level 6 I have application. In my project root directory pro…… -
Java instantiates a class from a string
I have the following, public interface SuperbInterface public class A implements SuperbInterface public class B extend…… -
Java hangs even if the execution of the script is complete
I'm trying to execute a script from my java code, as follows: Process p = Runtime.getRuntime().exec(cmdarray,envp,dir)……