Recent Posts
-
Java – singleton using atomicreference
Is the deferred initialization singleton correctly implemented using atomicreference? If not – what are the possible p…… -
Java – JSP El: dynamically create attribute names
See the English answer > how to get value of bean property when property name itself is a dynamic variable1 I have …… -
Java – should I use mod or remainder when checking the separability of BigInteger?
When a BigInteger B checks the divisibility of BigInteger a, I can write a. mod (b) Equals (BigInteger. Zero) or A. ho…… -
. Net – does the StringBuilder initialized with a string contain the exact (only) space for the string?
I wonder if this code StringBuilder sb = new StringBuilder("Please read the following messages."); ... initialize sb w…… -
Java – Jackson: multiple back reference attributes named ‘defaultreference’
I tried to map a JSON (string format) to an object, and I got the following error This is a JSON string {"pledge":"74"…… -
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…… -
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…… -
Java – system. Java in Servlet exit
If someone writes system. In the servlet Exit(), will the server or application crash? Solution Maybe! The container s…… -
In neo4j, how to set a label as a parameter in a cypher query in Java?
I have a problem using cypher parameter in neo4j in Java I run embedded databases The code should look like this (grap…… -
How to install Java 7 EE SDK and download it as Mac OSX SH file
I'm new to developing Java on Mac OS X I want to download the Java 7 EE SDK so that I can use Java for desktop / mobil…… -
GUI architecture and design in Java (swing)
I spent the last few hours searching the Internet for examples and ideas on how to write medium-sized GUIs in Java I k…… -
Java – change the shape of the scatter point
I have thousands of points on JfreeChart's scatter chart //* I'm using shapeutilities, but when I use xyitemrenderer /…… -
Java – is logback mature enough to replace log4j?
I have read similar questions, such as this and this But they're about four years old! In addition, I also read the lo…… -
How do I manage the back buttons for multiple screens in libgdx?
What if there are some ways to manage the back button in libgdx? For example, in andengine, I implemented the followin…… -
Java – extract main content (highest text density) web pages from news articles
I want to make a code to extract the main news from the news website News websites contain major news, advertisements,…… -
Copy data files when building in Java / eclipse
With my java source code, I have some data files that I want to copy to the build directory when the source code is bu…… -
How do I convert year and week to Java date objects?
How do I convert year and week to Java date objects? I'm using jodatime, but it's also good to use the standard Java c…… -
Java – spring security configuration error: beans have the same ‘order’ value
I have a web application in which I implement spring security, my spring security XML is <?xml version="1.0" encodi…… -
Java – regular expressions extract text in reverse order up to the third character instance
I have a format of XXXX_ YYYY_ YYYYYYY_ String of yyyyyzzz How to extract a string from the back until it hits thrid_ …… -
Java – how to change property values at run time in spring
I need to change properties in the application at run time My properties file has hours.expired=12 My service private …… -
List and list in Java
ArrayList of list < InterfaceI > and list both have class objects that implement InterfaceI When should I use i…… -
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 query the M: n relationship with JPA2?
I have an object (blogpost), which contains a collection of M: n elements (tags) How to query an object (blogpost), in…… -
Java – how to interrupt the idle of IMAP?
I'm using the JavaMail API that connects to my IMAP server Using javax mail. Folder. When idle () method, everything w…… -
What is the largest adjustable byte buffer available in Java?
I need the byte buffer class in Java for single thread use When the buffer is full, the buffer should be resized inste…… -
Java – converting from double to int does not always just discard the decimal part
I'm experimenting with the code I found here the Java specialties' newsletter public class MeaningOfLife { public st…… -
Java – Android: the sampling microphone does not record to obtain real-time amplitude / level?
I'm trying to get the microphone amplitude level on Android: MediaRecorder recorder = new MediaRecorder(); recorder.se…… -
Java – is there any way to make SharedPreferences global in my entire Android application?
Is there any way to make SharedPreferences global in my entire application? Now I use these lines in many parts of the…… -
Java – get the location of the swing component
I put some jpanels into another JPanel, and its layout is @ R_ 987_ 2419 @ layout and y-axis That's what I did, JPanel…… -
Java – dimension, changing width / height only
How do I change the width or height of only the components that need a dimension object? Now I do this: jbutton.setPre…… -
“Java.net.socketexception: socket closed” when reading S3 file
I'm trying to read the CSV text file from S3 and send each line to the distributed queue for processing When trying to…… -
Java – is it a best practice to create an unused reference to the value returned by the called method?
I have a friend whose teacher thinks this is a good habit: public void enterAnythingToContinue(){ String junk = in……