Recent Posts
-
Set java system properties without putting values on the command line
I have some java code that depends on the system attribute super secret. password. I need to set this property when ru…… -
Java – there is a faster method, and then StringBuilder can connect strings in up to 9-10 steps?
I have this code to connect some array elements: StringBuilder sb = new StringBuilder(); private RatedMessage joinMess…… -
Java print string c equivalent
See English answer > java reflection: how to get the name of a variable? 7 #define printVar(var) cout<<#var&l…… -
Java – can nested threads throw exceptions for parent threads?
I have a controller class and a monitor worker thread public class ControllerA { public void ControllerA(){ …… -
Java – why does my compiled class have its method local variables renamed?
I have a kitchen Jar file I need to modify one of its classes I decompile it with JD Then I modified toster Java file …… -
Java – communication between two jpanels
I have this "main" panel (let's call it AAA) and borderlayout, as well as two panels (BBB and CCC): public class AAA e…… -
How to use index for O (1) random access sort set
You need a string collection, in which the inserted elements need to be sorted or non repeated, and can be retrieved b…… -
Error parsing string to date in Java
Yes, another Java date post:) My question: Simple standard code to test whether the insertion date is in the form of r…… -
Java – why doesn’t the acquire () method in semaphores have to be synchronized?
I'm using java to enter semaphores and reading this article http://docs.oracle.com/javase/1.5.0/docs/api/java/util/con…… -
Java 8 streams – collect potentially null values
I have the following code: private static <T> Map<String,?> getDifference(final T a,final T b,final Map<…… -
Java – add image to jar
I want to set the icon to my JFrame I do the following: Image icon = Toolkit.getDefaultToolkit().getImage("src/images/…… -
Java – args4j: how do I manually sort options in usage?
In args4j, I define the following options: @Option(name="-host",usage="host to connect") @Option(name="-port",usage="p…… -
Java – completable future usability and unit testing
I was learning java 8 completable future and finally got this All fists, what do you think of this line of code? I nee…… -
Does mixing SIMD instructions and multithreading reduce performance?
I am interested in doing a project on face recognition (using SIMD instruction set) But in the first semester of this …… -
Java – listchangelistener waspermutated block
The Javadoc of listchangelistener provides a template for handling changes But I don't know how to deal with permutati…… -
How to convert mouse position to character position in jeditorpane in Java Swing
I'm trying to solve a problem. I need to find a position in a text in jeditor pane according to the position of clicki…… -
Java – eclipse, jar export wrapper SVN file
How can I prevent this from happening? It is captured when I create the jar Files in the SVN folder Uncheck at the pro…… -
JavaFX stopwatch timer
This is a simple stopwatch class for JavaFX. Set the style of the label object as needed package aaa; import java.tex…… -
Creating too many threads in Java
I use threads in my java application to get data in parallel (using network calls) I have a method (not in the thread …… -
How to get SOAP messages when using the client generated by axis 1.4 wsdl2java
This can be a simple problem for anyone with moderate expertise in Web services using Apache axis I have a web service…… -
Java – instance level access control in Apache Shiro
I found a flexible security framework Apache Shiro I successfully realized authentication and authorization with Shiro…… -
Java – ooobeans dead What choice do I have?
Recently, I started exploring the office bean library. In other words, I tried to run a simple OOo bean example First,…… -
java – ArrayList. Remove does not work the first time it is called
I have an ArrayList < string > I use to store packageinfo (an example of an element in ArrayList is "com. Skype.…… -
Java – pass joda time objects between app layers
I'm thinking about using joda time Solution At the beginning, only the most appropriate type (joda objects in this cas…… -
Java – use the for loop to get the Hamming distance between two strings
In this task, I need to obtain the Hamming distance between two strings sequence1 and sequence2 (the Hamming distance …… -
Java – substitute for spark, fat and jar
I know there are at least two ways to put my dependencies into spark EMR jobs One is to create a fat jar, the other is…… -
Can I define custom types using primitives in Java?
For example, the following is the syntax correct code Double number = 10.0; Can I define my own class, such as price P…… -
Java – use xmlcoder to convert encoded XML to list
I'm writing an application that reads a lot of basic user details in the following formats; Once read in, it allows us…… -
Java – cannot run swing from the command line
I use the command line in windows to compile and then execute my @ L_ 502_ 1 @ procedure I've already gone http://java…… -
File in Java Exclude system files from lists()
I'm in Java io. Use method file in file Listfiles() gets the list of files, but it returns some system files, such as …… -
Java – spring data JPA update method
I'm still looking for an update method in spring's data JPA to update a given object that persists in a relational dat…… -
How do I convert a 2D list to a 1D list using streams?
I tried this code (the list is ArrayList < list < integer > >): list.stream().flatMap(Stream::of).collect(……