Recent Posts
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Java mimetypes filetypemap always returns the application / octet stream on the Android simulator
I'm trying to determine the mime / media type stored on the Android device (actually a virtual device used with the em…… -
Java – BufferedReader does not read all lines in the file
I tried to read / proc / net / XT in Android 6_ qtaguid / stats. 2 a0 0 0 123456 311 48329 737 48 1 3 b0 0 0 0 0 0 0 0…… -
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 …… -
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…… -
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…… -
How to use JPA to enumerate the where clause in jpql?
I have an enumeration as an attribute of an entity When I try to use enumeration in jpql suqry, I give an error In add…… -
Java – after calling set text, jlabel draws new text over the old text
I have a progress dialog window, which contains three jcomponents: jlabel, jpprogressbar and JButton. It is used as th…… -
Non blocking socket writing in Java is compared with blocking socket writing
Why does someone prefer to block writes and non blocking writes? My understanding is that if you want to ensure that t…… -
Why is the result type of short integer division in Java not a simple integer?
Consider this Code: public class ShortDivision { public static void main(String[] args) { short i = 2; …… -
Java – how do I close a socket in the right way?
This is a simple TCP server How to close the socket when the program terminates? Anyone can figure out how to close a …… -
java – String … whats do String … mean
I want to figure out some java code private static object [] methodName(NodeList nodes,String... Names) What is an ope…… -
Java – Dynamic parsing logic operation – and, or, loop condition
I have an incoming record filter stored with logical clauses, as shown below Acct1 = 'Y' AND Acct2 = 'N' AND Acct3 = '…… -
Java – Preparedstatement cache – what does it mean (how does it work)
I'm using, for example, c3p0 and some defined "maxstatements" for preparestatement caching Now I send a prepared decla…… -
Java – with mockito Strange generic edge cases inferred by when () and generic types
I'm writing a Java. Net using mockito beans. For the test case of propertydescriptor, I want to laugh at the behavior …… -
. Net – using dapper ORM to improve the performance of SQLite batch insert
I'm using a desktop application that uses SQLite to batch insert tens of thousands of rows into the SQLite database I …… -
Java – use Hadoop to process a large number of small files
I am using the Hadoop sample program wordcount to handle a large number of small files / Web pages (CCA. 2-3 KB) Since…… -
Java – why mine Jar files run slower than programs in eclipse?
I have a java program that reads a large amount of input data from the database, operates on it, and then writes the d…… -
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…… -
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…… -
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 – comments do not work
I'm working on an annotation that forces a class to be immutable Here is the processor code: @SupportedAnnotationTypes…… -
Using the jigsaw module and jdk9 to run spring boot
What's wrong with this application I think the mixture of classpath jar and module jar is effective For all cans witho…… -
Get the start and end dates of the current week in Java – (Monday to Sunday)
Today is April 6, 2014 – Sunday The output uses the following code: – Start date = April 7, 2014 End date = April 13, …… -
Java – mockito – I feel like I’m not making full use of its potential
When using mockito, I only use it to simulate dependencies, that is, my workflow looks like the following: I have a de…… -
Java – detects the shift modifier on mouseevent, which is generated by clicking from swing
I am using java swing to process some mouseevents in GUI applications From now on, I analyze mouse events in the mouse…… -
Java – JAXB converts @ xmlelementrefs and @ xmlelements to XS: choice
I have four classes The person class, and the phone and address classes are used to extend its abstract contactinforma…… -
Java – what causes “symbol not found” and how to fix it?
I've been trying to solve this problem. I've run it in different programs, so it must be in the code It may also be si…… -
Java – how do I add interceptors to all API requests except one or two?
I know that an interceptor can be added to all requests through okhttpclient, but I want to know whether headers can b…… -
Java – liquibase hibernate plug-in does not work
As stated herein（ https://github.com/liquibase/liquibase-hibernate/issues/74 ）I encountered a problem making the liq…… -
How to kill these code blocks in Java?
caller: switch (type){ case "creature": Creature returnActor2 = getNextCreature(); …… -
Which Java RMI / RPC / IPC technology should I use?
I am developing a Java application that contains a server and a client (there may be multiple clients in the future) t…… -
Java – spring batch and integration
I'm a beginner in spring. I have to do a project for the school What kind of projects can I use spring batch and integ……