包含标签：Java 的文章
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Grails – how do I maintain the order of keys in a Java properties file?
I have groovy code to read the properties file, change the value, and then write it to the same file def props = new P…… -
Is it safe to capture stackoverflowerror in Java?
I have two different function implementations (for example, tree size), one recursive and the other explicit stack Rec…… -
Java – how to upload files on the server folder using JSP
There is already an answer to this question: > recommended way to save uploaded files in a servlet application2 Her…… -
Is it still relevant to replace enumeration structures with classes in Java?
I'm reading the effective java written by Joshua Bloch in 2008. A hint is to replace enumeration structures with class…… -
Java – the portlet URL opens another portlet in a pop-up window
I have a create_ account. JSP hook The question is: how do I provide a portlet URL? How do I access it? In this portle…… -
Java – defines a global uncaughtexceptionhandler for all threads of the application
I want to define an application level uncaughtexceptionhandler in my java application. If an uncaught exception is thr…… -
Extract from strings in Java
I have a string; String value = "(5+5) + ((5+8 + (85*4))+524)"; How to split / extract the logical value from this str…… -
Java – reads and stores the contents of the file as a double array
I need to write a program to read and store input files with double arrays in Java The number of values in the file is…… -
Java – jetty: stopping programmatically causes “1 thread cannot be stopped”
I have an embedded jetty 6.1 26 examples @Override protected void doGet(HttpServletRequest req,HttpServletResponse res…… -
Java – JPA: @ embeddable object how to get a reference to its owner?
I have a user class, @ embedded a profile class How to give an instance of a profile a user class reference to its own…… -
Java – hibernate exception: unknown name value of enumeration class
When I try to retrieve a record from the DB, I get the unknown name value of the enumeration class Using JSF 2.0, JPA …… -
Java mapping concurrent update
I'm trying to create a map with int value and increase them through multiple threads Two or more threads may add the s…… -
How to use Java 6 to build a java project for the Java 1.4 library?
I have a project originally written for Java 1.4, but I only have Java 6 on my Mac, and I can't install Java 1.4 Usual…… -
What is the object field initialization and constructor order in Java
I ended the following scenario in the code earlier today (I admit it's a little strange, I've refactored it) When I ru…… -
Java – shutdown hook and finalizer methods
I just don't understand why I have to use runtime addShutdownHook. If you want to do some cleanup when the JVM exits, …… -
Java – spring boot – environment @ Autowired throws NullPointerException
I have one that uses spring boot 0.5 0.m5 project settings In one of my profiles, I tried to @ autowire environment, b…… -
Java – send and receive serialized objects over UDP
I tried to send a serialized object from the server process to the client process in Java using UDP The problem is tha…… -
Java – guava: why method create () instead of constructor?
Excuse me, can you explain why guava creators like to define constructors as private and define static methods create …… -
Java – comments do not work
I'm working on an annotation that forces a class to be immutable Here is the processor code: @SupportedAnnotationTypes…… -
How to write windows software in Java?
I just studied Java in college However, I can only write programs that run on the command line How to use java to crea…… -
Java – what if you only reference objects from garbage?
Suppose there is an object a of class A, which holds a reference to another object B of class B This is the only refer…… -
Java – can eclipse evaluate expressions dynamically?
In some Java ides (such as BlueJ and drjava), users can open an interactive window where they can type Java expression…… -
Java Basics: static functions without names or return types
public class Main { public class Main { public static final Logger LOGGER = Logger.getLogger(Main.class.getName())…… -
Function style of Java 8 link
I have a map < < string, string >, which represents the link from a to B I want to link all possible routes F…… -
Java – how do I name repositories and service interfaces?
How do I name the repository and service interfaces and their implementation classes? For example, I have a model call…… -
Java – set up multi-directional – Android
I am a novice in Android programming. I have a problem with direction I hope my activities can only be viewed in portr…… -
Continuous integration – how do I test JavaFX 2 in a headless environment?
I tried to automatically test JavaFX 2 applications running on Java 7u6 through integrated JavaFX 2.2 As a next step, …… -
Java – how to centrally print statement text?
So I'm developing my java project, and as part of the program, I'm printing text Example: public static void main(Stri…… -
How to work in Net application to identify possible memory optimizations?
We have one Net application, our customers think it is too large-scale deployment. We want to know what will help our …… -
Processing objects according to the implementation of interfaces in Java
I have been looking for design ideas to solve this problem in Java I'm using a library (I can't change it). For this e…… -
Java – unable to initialize class com sun. xml. internal. ws. fault. SOAPFaultBuilder
I use JAXB - impl - 2.1. In the Maven library 3.jar .. Everything looks good in the POM entry If someone encounters th…… -
Java – does not override generic methods in superclasses – > which one to use?
In view of this situation: public class Animal { public <T> void genericMethod(T t){ System.out.pri……