Java
-
java – Jongo vs(DBObject)JSON. parse
I try to find out the advantages of Jongo instead of simply using (dbobject) JSON Parse (...) unmarshalls the JSON com…… -
Javaw still creates a console window; Why?
See English answer > start a java program without the console6 java -jar Jython.jar init.py However, when I change …… -
Java – XY position of a certain Z depth
In processing (Java dialect), there are methods screenx, screeny (and screenz, but we'll skip it now) Suppose I have a…… -
Asynchronous I / O – Java
I've been looking for details about the benefits of asynchronous I / O in Java, especially from application stack desi…… -
Java – regular expression lookup substring
Suppose I have a substring BB, which can be separate or part of a longer string, such as BB or AA | BB | CC or BB | CC…… -
Performance – unpacked boxed value in a vector of quads
I try to debug performance problems as part of more complex code It seems that the append function I used to create dy…… -
Java – HBase: the filter is not applicable to negative integers
We have successfully implemented hifier's qualifierfilter and valuefilter (using binarycomparator), and they work norm…… -
How do I use LDAP authentication for exchange web service connections in Java?
I try to write a Java application that accesses exchange web services to read e - mail Therefore, I use the exchange w…… -
How to confuse a Huffman tree with a given frequency and how to start? Java
I want to know how to deal with my homework I'm trying to create a Huffman tree that will encode and decode messages i…… -
Java – does not use recursion to traverse directories?
problem What am I doing Now I'm doing the stupidest thing: import java.io.File; public class Eseguibile { privat…… -
Java – network quality metrics on webapp
Is there any way to indicate the current network quality of the client on the web application (some type of bar, simil…… -
Java – groovy classes are not collected, but there are no signs of memory leaks
I have a Java class that dynamically reloads groovy classes using a custom class loader. I see some strange behaviors.…… -
JavaMail and non ASCII characters in file names
I can send attachments with non ASCII file names in JavaMail, but I can't download them I specifically get Java. Java …… -
After adding its own interface, Java will throw notserializableexception
People, I'm sticking to the new android app I'm developing For the application (card game), I need to save some data I…… -
Java – password protected applications in Tomcat
I am developing web applications using jsp servlet, and I use Tomcat 7.0 33 as a web container So my requirement is th…… -
Java – spring JDBC declarative transaction management in karaf
I have a project module that is built as an OSGi package (spring DM) I can't set up declarative transactions. Someone …… -
Avoid nesting if else / switches – Java
I'm reviewing some code (Java) and making changes according to the business logic flowchart The current code relies on…… -
Java swing gridbaglayout panel resizing problem
I'm making a simple little swing application for a relative, but I'm having trouble animating it This is the descripti…… -
Java – hibernate sqlfragment memory leak?
I deployed a simple webapp on the Tomcat server Webapp is a rest web service. Each web resource loads data from MySQL …… -
The fastest way to query XML in Java
See English answer > efficient parser for large xmls4 DOM – XPath: this takes a lot of time, DocumentBuilderFactory…… -
java – GrizzlyServerFactory. The difference between createhttpserver and the new grizzly webserver
I am using Jersey and embedded grizzly web server to create restful web services I see two ways to create an embedded …… -
What is Java util. regex. Pattern. GWT substitution for quote (string ARG)
In my application, I need the following code: string1. replaceAll(string2,myConstatntString) The problem is that strin…… -
How to evaluate the utility of recursive algorithms in Java?
Background: I'm trying to learn algorithms and Java Run 320 × 320 grid, 100 trials, 5 times faster than non recursive …… -
Deep copy of Java object
I am trying to clone an object of mygraph. I hope it is a deep copy, so the ArrayLists in the object are also cloned N…… -
java – ClassNotFoundException：org. dom4j. DocumentException
I am trying to debug (F11 on eclipse) the Java GUI application I inherited, but when the application outside the eclip…… -
Java – for Windows 7, what is runtime getruntime(). Exec (“domain specific equivalent CLS”)
I want to clear the screen in my java application. After reading a lot of questions and Google search, I found the fol…… -
Java – Maven has the same properties for each profile
I am faced with the Maven attribute of each configuration file I have two profiles, each with the same attribute 'prop…… -
Java – how to index and search numbers in Lucene 4.1
In my 3.6 code, I add numeric fields to my index as follows: public void addNumericField(IndexField field,Integer valu…… -
Call directly ` clojure lang.Compiler. Compile ` to AOT compile clojure from Java
Use clojure lang.Compiler. Is it legal for compile to compile clojure from Java? Our Java application is used to pass …… -
Java – how to use resteasy to implement OAuth 2.0 in Google App Engine?
I am developing Google App Engine rest service. I want to use OAuth 2.0 for authentication I add the following code to…… -
Java – how to get entity size in gae / J?
The gae document mentions that the maximum entity size is 1MB Because I store a lot of data in entities, I want to kno…… -
Java – check whether the object is an instance of list
I have an object that sometimes contains list < Object > I want to check it with instanceof, and if so, add some……