Recent Posts
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Java – use JSTL tag to escape JSP el (dot character)
Some frameworks (spring, Tomcat itself) add servlet request attributes that cannot be used in El expressions by defaul…… -
An invalid swing component height is required
The basic setting is as follows: I have a vertical jsplitpane. I want a fixed size bottom component and a resized top …… -
Java to C cross compilation
Who knows a good java to C cross compiler? Do they work well? Solution Can you explain why you want to port java code …… -
Java – Android – asynchronous network call – response interdependence
I encountered this situation when developing Android applications today. I need to render graphics according to the re…… -
Java – how to compile only changed source files using ant
I'm trying to write an ant build for compiling the source folder, which is the target of my compiled script <target…… -
Java – get the absolute path of all files in a given folder
I need to save all the file names and absolute paths in a given directory in memory myDirectory. List () – retrieves o…… -
Properties in Java – can we use comma separated keys for individual values?
I want to provide multiple keys (> 1) for a single value in the properties file of my java application A simple way…… -
Java – App Engine blobstore – what can I do to limit the size of files that users can upload?
What can I do to limit the size of files that can be uploaded? I know I can use swfupload to limit its client, but how…… -
Java – slf4j log4j recorder does not record
I want to use slf4j-log4j for the first time In each Java class, I define such a recorder: private org.slf4j.Logger lo…… -
Java – forkjoinpool – why does the program throw outofmemoryerror?
I want to try forkjoinpool in Java 8, so I wrote a small program to search all files with names containing specific ke…… -
Java – specify the appropriate table size for hash
If I have a 1000 key, what is the appropriate size of my hash table? Solution This depends on the load factor ("percen…… -
How do I use Java regex to find all repeated character sequences in a string?
Use Java and regex to parse a random string to find repeated sequences Consider string: aaabbaaacccbb I want to find a…… -
The Java logger uses the… Function
See English answer > which of array creation vs string concatenation for logging method has better performance? 3 m…… -
Java – Android studio error: org gradle. process. internal. ExecException
I'm a novice in Android development, and I encountered my first mistake, which seems to be unsolvable I have downloade…… -
Java – how to capture TrayIcon Displaymessage() mouse click on the tooltip tone
Hi, I'm trying to show more details after the user clicks the mail balloon tooltip However, I can't find how to captur…… -
Java – what to use: executeupdate() or execute()?
Please tell me which two methods of executeupdate and execute are the values (?,?,?) of the inserted user (name, addr,…… -
Java – why doesn’t this code see any significant performance improvement when using multiple threads on a quad core machine?
I wrote some java code to learn more about the executor framework Specifically, I wrote code to verify Collatz hypothe…… -
Java – get Google cloud storage files from blobkey
I wrote a Google App Engine application that uses blobstore to store data generated programmatically To this end, I us…… -
Java – how do I limit spring component scanning to files only in my war?
I'm using spring's component scan to find beans in my application <context:component-scan base-package="com.myapp"/…… -
Enforce warnings in Java
I want a mechanism to manually throw compile - time warnings I'm using it to mark unfinished code, so I can't forget i…… -
Java – spring MVC does not record all exceptions
I have spring MVC settings to log exceptions using commons, but I find that some runtime exceptions are not logged Thi…… -
Java – resource folder in Android studio unit test
I have a gradle project with the following structure: project/ src/ androidTest/ java/ …… -
Java – Eclipse: import and export operations in the “save operation” option
You can import export cleanup settings as XML files in preferences - > java - > code style - > clean up I wan…… -
Java – selenium. In selenium webdriver What is the equivalent of waitforpagetoload (“30000”)?
The following is the Java code waiting for the page to load in selenium RC: selenium.waitForPageToLoad("30000"); What …… -
Java – how to improve the reliability of e-mail sending and delivery?
Current applications use simple java mail to send several emails a day, but some emails will never be sent to the clie…… -
Java: can I use two different names in an enumeration to count the same thing?
I have an enumeration course with main directions (North, East, South, West): public enum Direction { NORTH,EAST,S…… -
Java – what slows down this clojure feature?
I work in clojure project Euler problem 14 I have a good general algorithm and I get the correct results, but it is di…… -
Just in time compilation – when does it actually happen in Java?
Recently, I participated in a discussion on Java efficiency The answer is that Java code is often compiled directly in…… -
Java – ehcache – uses list as the cache value
So this is the problem I'm trying to solve - I have an object with two integer fields, and I want to cache public clas…… -
Java – iterates over each possible double value
Consider the situation where you want to test each possible input value Creating a situation that iterates over all po…… -
What are those Java threads that start with “pool”?
I have a problem with the Tomcat server that cannot be shut down normally I performed a thread dump after issuing the …… -
How to run sudo command for OS X in Java
I'm using the app in JavaFX. I'm trying to open an application using the command in the terminal. I'm using my java co……