Java
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Confusion causes verifyerror: expect a stack diagram frame
We are using the latest JDK 7 (U45) and Proguard version 4.10 Recently, our distribution failed. After confusion, the …… -
Multithreading – busy cursor – why?
Can anyone give me a scene they think is reasonable? I think from the user's point of view, they are always a bad idea…… -
Java, how to delete integer items in ArrayList
Suppose I have such an ArrayList: ArrayList<Integer> list = new ArrayList<Integer>(); After adding operati…… -
Displays morning, afternoon, evening, and evening messages based on time in Java
What do I want to do: Display message based on Good morning (12:00 ~ 12:00) > good noon (12:00 to 4:00) > good e…… -
JavaFX – CSS Style list
I have a listview and want the following: >Odd rows of white background color > listview: when the mouse hovers …… -
Java – register a close hook in spring 2.5
I have a spring application that does not call the bean destroy method when shutdown I have seen that this is due to i…… -
Java – how does undertow do non blocking IO?
I use undertow to create a simple application public class App { public static void main(String[] args) { …… -
Multithreading – many threads or as few threads as possible?
As a side project, I'm writing a server for an old game I've played I try to make servers as loosely coupled as possib…… -
Java – get the maximum key from HashMap?
I have a HashMap defined like this HashMap<String,Integer> uniqueNames = new HashMap<String,Integer>(); It…… -
JSON to Java object example
There are many tools for converting JSON string to Java object. The following small example is just for me to practice -
Java implementation of file reading, writing and compression
This paper describes the implementation method of file reading, writing and compression in Java through examples. The …… -
Java – maven buildnumber plugin SVN revision is available only when format is not used
When using maven buildnumber plugin 1.0 beta 4, it seems that I can get SVN revisions unless I use the < Format >…… -
Amazon elastic search – use Java SDK to interact with Amazon elastic search service
I can't find an example of how to use Amazon SDK to interact with Amazon elastic search cluster Can someone give me an…… -
Java operators >, > >, and > > >
>Indicates greater than, for example: if (a > b) The result is a boolean type >>Indicates a signed right s…… -
Java – spring upload file problem
I need to upload the file from the browser to the server I use spring 3.2 as my web framework So I configured my appli…… -
Disadvantages of using Java Native Interface
I can't get two disadvantages of using JNI I want to know more about them: >It is difficult to debug runtime errors…… -
Java implements compressed string and Java string filtering
Topic 1: input a string of lowercase letters (a ~ z) through the keyboard. Please write a string filter program. If mu…… -
Generics of Java generics
I have a generic class that represents a piece of text The text fragment can have any of a variety of different modes …… -
Java imitation Windows calculator example
The interface of this calculator imitates the simple calculator provided by windows, including interactive interface a…… -
Adjust JPEGs to lose color in Java (try to use multiple libraries)
I have tried several image adjustment libraries published on so and raw Java using getscaleinstance Although everythin…… -
Use stringescapeutils. In commons lang3 Alternative to escape javascript()
My task is to convert our code from using org apache. commons. Lang update to org apache. commons. Lang3, I found that…… -
Increase BigInteger performance of Java
How to improve the large integer performance of Java? For example, this factional program: import java.math.*; class F…… -
Example of converting Java integers (seconds) to minutes and seconds format
Integer (seconds) converted to minute second format (XX: XX: XX) -
Celery flower as a daemon
I run celery with redis backend I know that flowers are tornado applications, so I should use a process to run the tor…… -
Java – why does the number class not have methods such as add () or close ()?
So this is a question about Java design Why Java There are no add () and negate () methods in the lang. number class, …… -
Java – a simulation method that uses jmock to type parameters
Background: This is a jmock JUnit specific problem (these are the two technologies I have to use) Yes, what I want to …… -
What is the use of lambda expressions, a new feature of Java 8 (usage examples)
We've been looking forward to lambda bringing the concept of closure to Java for a long time, but we lose a lot of val…… -
Add Java util. HashMap is converted to scala. XML in Java collection. immutable. Map
I used some Scala libraries from my java code I have a collection problem I need to pass Scala collection. immutable. …… -
Example of JSON data generated by Java
Online JSON code inspection, inspection, beautification and formatting tools: http://tools.jb51.net/code/json JSON onl…… -
Java – start a jar file like a service in Linux
I want to start and stop my jar file as follows Service myservice start Service myservice stopped My current jar file …… -
Java – selenium asynchronous script cannot be executed
Why do I get selenium 2.25 when I try to execute an asynchronous script Exception for 0 //navigate to my test page. S…… -
Java – how to determine if two circular sectors overlap each other
Each sector can be expressed as (x, y, R, a, d), where x, y is the position, R is the radius, D is the direction and a……