包含标签：Java 的文章
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Can I write the end of a 5GB file in Java?
Can I write the end of a 5GB file in Java? The question appeared in my office, and no one was sure what the answer was…… -
Java – update Excel files using Apache poi
I'm trying to update an existing excel file using Apache poi Every time I run my code, I get an error, as shown below …… -
Java – why can’t the interface be final?
JLS 2.13. 1 interface modifier If I can write and create static inner classes in interface I and provide implementatio…… -
Java – how to use variables from superclasses to subclasses?
I have a superclass. I want to use the variables in this superclass to enter my subclass How is this possible? Solutio…… -
Java – anonymous inner classes in Inner methods
See the following code: import java.util.ArrayList; import java.util.List; class Main{ public static <T> L…… -
Java – Lombok: how to specify an Arg constructor?
With Lombok, can you specify an Arg constructor? My goal is to create a constructor using the Lombok annotation, as sh…… -
How to clear Catalina Out without disabling further logging?
Our Catalina The out file becomes very large every once in a while (yes, I implemented slf4j and logback in my applica…… -
Splitting Java collections into subsets based on object properties
I have a list of myobjects... MyObject {int ID, string name} Now I want to split the list into sub lists with the same…… -
JavaFX 2.0 game engine / framework – how will JavaFX 2.0 change java games?
I realize that JavaFX 2.0 has only appeared for a short time, but I hope someone knows about the FX 2.0 game engine (e…… -
Java – is ThreadLocal thread safe?
For example, we have a static ThreadLocal field and a setter: private static final ThreadLocal threadLocalField = new …… -
Java – spring: add custom user details to spring security users
I am currently developing a spring MVC application. I need to add a custom field to my spring security login user when…… -
Center text on canvas?
Can anyone give an example of how to centralize text on JavaFX 2 canvas? Graphicscontext has some functions like sette…… -
Java – should classes with only static methods be abstract?
I have a class that provides a set of static utility type methods On the one hand, I don't want this class to be insta…… -
How to use the swing class java to draw a grid and detect the mouse position when clicking and dragging
I'm trying to use swing class to create grid UI (5 * 5) I tried a nested loop and dynamically added JPanel to JFrame I…… -
Get the value of enumset from Java
If you use enumset to store traditional binary values (1, 2, 4, etc.), when there are less than 64 items, I will think…… -
Execute shell commands from Java
I am trying to execute shell commands from Java applications on GNU / Linux platform The problem is that the script th…… -
Java – multithreading and recursion together
I have recursive code that deals with tree structures in a depth first manner The code is basically as follows: functi…… -
What does the Java – BufferedReader constructor expect from FileReader
I need to understand the differences between the two classes and how they work together As far as I know, FileReader r…… -
Java – performance testing flex applications
What is the best way to test the performance of flex applications using Blazeds / Java Server backend? We are studying…… -
Java – what is the meaning of ‘static’ in the method header?
I want to know what is the function of the word 'static' in the title of the 'staticnumbers' method public class Displ…… -
Java integer memory allocation
Hey, I want to know the following code snippet public static void main(String[] args) { Integer i1 = 1000; Int…… -
Java – how to define an index in a hibernate entity through several columns?
morning. I need to add an index to the hibernate entity As far as I know, the @ index annotation can be used to specif…… -
java. What are the benefits of NiO for web servers?
I know this is a recurring problem. I have read articles like the following http://www.mailinator.com/tymaPaulMultithr…… -
Java – mule: get exception message
I have a default catch exception in mule. I'm trying to access the exception message using mule expression: # [excepti…… -
Java – breaking nested for loops without using break
My project is finally finished, but my only problem is that my teacher doesn't accept the "interrupt" in our code Some…… -
How do I use filechannel to append the contents of one file to the end of another?
The file a.txt looks like: ABC The file d.txt looks like: @ h_ 404_ 5@ DEF I'm trying to take "def" and attach it to "…… -
Java – call the activity from viewholder in recyclerview?
I have a recyclerview that loads the contents of my string array and works normally, but I want to open a new activity…… -
Java iterator implementation compilation error: do not overwrite abstract method remove()
Why do I receive the following compilation errors: Lriterator is not abstract and does not override Java util. Abstrac…… -
Java – use progress bar in file search
I am writing an application that will search for specific files from the corresponding path During the search process,…… -
JAXB – how do i disable the Java Naming Convention in xjc?
For example, some in XSD_ Property must be some in a Java class_ Property instead of someproperty I tried to use globa…… -
How do I launch the default (native) application for a given file from Java?
I am displaying a list of files; Xls, Doc, PDF, ODT, etc. in my java application (eclipse RCP) When the user clicks th…… -
Java – can a bifunction reference be passed to a method of the desired functional interface?
I've only used java 6, and now I'm catching up to learn new features in Java 8 I read this article here: It says: Bifu……