包含标签：Java 的文章
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Java – NetBeans JFrame initialization; The build is good, but there is no window
I'm using Java and I'm trying to create a GUI using NetBeans I've done this before. I'm confused because my code doesn…… -
Convert Java complex objects to JSON
I need to convert the following classes: package comS309.traxz.data; import java.util.Collection; import org.json.JS…… -
Java – should I inherit JFrame / JPanel?
I am used to subclassing window classes in other programming environments, but I often see similar things in Java tuto…… -
Java – number of active tasks using ThreadPoolExecutor
I am using ThreadPoolExecutor to perform tasks in my java application I have a request. I want to get the number of ac…… -
Java – which is faster, equalsignorecase or comparetoignorecase
In a Java application, suppose I can choose the following comparison method equalsIgnoreCase(String anotherString) com…… -
Java – “jarfile cannot be accessed in Linux”
We have a web application running under JBoss 5, which regularly starts a 'Java' process (using processbuilder) to com…… -
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,…… -
Unable to change Java io. tmpdir
I'm trying to change Java. Net using this command io. TMPDIR directory java -Djava.io.tmpdir=/temporary This is not su…… -
Double vs long serialization in Java
I can store a number as long and double in HBase They all occupy 8 bytes in Java The advantage of using double is that…… -
java – EventQueue. invokeLater vrs SwingUtilities. invokeLater
Can anyone highlight the difference between the two? Both are required?! I have an application that uses both, but won…… -
How to write arrays to OutputStream in Java
I want to send multiple random values through socket I think arrays are the best way to send them But I don't know how…… -
Parsing currency strings in Java
Suppose I provide a string similar to "$123456,56.25" or "123'456.67" or something similar (with numbers and decimal p…… -
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……