Recent Posts
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Audio Library – pitch detection algorithm
Does anyone know a good open source library to detect the harmonic pitch level intensity (chroma) of audio signals? Th…… -
Extending the embeddable class in JPA
I extended an embeddable class ABC from another embeddable class XYZ The object of ABC is embedded in an entity The ta…… -
Compressing binary data in Java
I tried to compress a set of binary data (the result set returned from the database) into a file It can be downloaded …… -
Java – iPOJO – @ reference does not inject services
There is an interface iservice in a package, which is implemented by serviceimpl class: public interface IService { …… -
What is java locksupport Parknanos Net equivalent?
Basically, I need a way to start submicrosecond thread sleep, just like parknanos Thread. Sleep seems to be accurate t…… -
Java – in the new Use the compiled protobuf classes in the proto file
I imported a library containing classes generated by protobuf I want to send this kind of object as part of other prot…… -
Java – eclipse debugging: continue after the return statement?
I recently started using eclipse for Android development During code debugging, I noticed a strange behavior (at least…… -
Java – how to read interrupts in download text?
I'm using last. Com listed in the "downloads" section of the API FM Java library When I call "getwikitext()" and set i…… -
How to execute CMD line when Java prompts for password
HY, I tried to dump the PostgreSQL database from my java application It is OK in CMD: pg_dump -U user database>outf…… -
Gson is required to return Java jsonarray
I can't return jsonarray, but my object seems to be a string The value of myArray is the same as that of jsonstring Th…… -
Java – handle enumerations (iterations, deserialization) that implement common interfaces
I have an Android application that can load data from a web source and display it I organize each API method, and thes…… -
Java – convert characters or strings to shapes / regions
I want to be able to convert any character or string into a shape or area so that I can draw the character in any size…… -
How to write script input of Java program
I am writing a java program that requires its (technical) users to write scripts for input; It interprets these script…… -
Java – what is the correct way to increment counters atomically in App Engine?
I use Java on Google App Engine, and I am most familiar with JDO data store interface I'm trying to implement a simple…… -
How to make Java Swing applications display the mouse cursor effect of Compiz mouse plugin (Ubuntu)
Compiz showmouse plugin has some good effects on people with low vision Unfortunately, these effects do not work in ou…… -
Java – spring transactions using JPA throw exceptions in the aftercompletion phase
I have a web application using the spring framework (3.1) and JPA (2.0) persistence backed up through hibernate (4.1.1…… -
Java – add annotations to JAXB generated classes that depend on information in the XSD
I have a WSDL XSD that needs to be converted to a Java class This is simple – wsimport will handle this problem withou…… -
Java – Android starts the calendar with start and end times
I have an application that contains an agenda with a list of times and dates When the user clicks one of the events, t…… -
JPA hibernate leaves the connection to obtain multiple queries
I have a jpql query that eagerly obtains multi-level associations, as shown below select distinct s from Singer s le…… -
Java NiO selector can select no more than 50 selectionkeys?
I used siege to stress test my manually built file server. It is suitable for small files (less than 1KB), but it can'…… -
Java sequencer playlist
I currently have a very simple course: public class Music { private Sequence sequence; private Sequencer seque…… -
Java – about bufferedimage Instructions for getsubimage (int x, int y, int w, int h) methods?
I'm trying to segment the image. I encountered a small fault. I don't know why it happened This is a quick pseudo code…… -
Java checks the existence of the key in the double nested hash map
I have a double nested HashMap HashMap, which wants to check the existence of the key and place the new value At prese…… -
ODBC – SAP BusinessObjects crystal reports – where does the data source come from?
I was confused by (I believe in) a seemingly simple theoretical question about SAP BusinessObjects / Crystal Reports s…… -
Java – how to store the inverted document index on disk?
I know this question has been asked again and again in stack overflow and Google, but I find that all the answers can'…… -
Java – try to convert PDF to text with fonts
I'm trying to read PDF files and store text in text files But in doing so, I also want to store font information at th…… -
How do I send images from a Java application to an Android application?
I have a client - server application The server is pure Java and the client is Android application They use ServerSock…… -
GWT compilation pending
I created a Google Web toolkit project in eclipse (indigo, GWT 2.4, Linux, Ubuntu), made some changes (mainly, renamed…… -
Game performance based on Java OpenGL block
I'm using lwjgl and Java to build a block - based 3D game, just like minecraft I currently have a block class, which c…… -
Java – is there any way to prevent the action listener from triggering when calling setselecteditem()?
I have a program that contains multiple combo boxes. Each combo box has its own action listener Selecting an item from…… -
Java – ffmpeg for screenshots?
So I have an applet that captures the screen and makes sound from the microphone of the computer, How to use ffmpeg to…… -
Java – newfixedthreadpool and object pool do not work properly
I was trying to figure out how to concentrate resources, and I began to suspect that my thread might be a problem (not……