Recent Posts
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Java – use the pop-up startup and security of the custom angularjs login page
I'm implementing a custom angularjs login page for spring security, and I have a problem verifying it I'm following th…… -
Java – how to generate selection tags using JSTL or standard actions in JSP
I want to create a selection tag in the JSP, where the option is enumeration (for example, all U.S. countries) Are the…… -
Why is java enumeration constant initialization incomplete?
I stumbled upon a very strange mistake. I can't explain why Imagine the following enumeration: import java.awt.Color; …… -
Java – how to use flush() in printwriter
I have some code like this: PrintWriter pw = new PrintWriter(new BufferedReader(....)); for(int i=0; i<10; i++) { …… -
Java – how to keep empty XML tags after XSLT – prevent them from collapsing into
Say I have a very simple XML, an empty tag 'B': <Root> <A>foo</A> <B></B> <C>…… -
Using null objects to access static fields in Java
The following simple code snippet works properly and is using an empty object to access static fields final class Test…… -
jsf – java. lang.ClassNotFoundException：javax. faces. webapp. FacesServlet
I received this error when executing JSF and primefaces I've included these cans, > jsf-api-2.0. 3.jar, > jsf-im…… -
Java – Android testing using appium and gradle
I recently started to think about doing some functional tests with appium I want to run appium test through Android st…… -
java – Avatar. JS and project Avatar
In the context of Java 8 and nashorn, I see two projects often mentioned Avatar. JS and project Avatar What is the rel…… -
Java – serialize an object with a non serializable parent class
How does the following code work? class A { int a = 10; } class B extends A implements Serializab…… -
Java – how to generate a unique int from a unique string?
I have a string object with a unique ID How to convert a string to a unique int in the simplest / fastest way? 10X. Ed…… -
Java – finds the number of active sessions created from a given client IP
Is there a way to determine the number of active sessions created from a given client IP address? Solution The standar…… -
Java – spring JPA / Hibernate: failed to import bean definition
Hitting my head against the wall for several hours can't solve this problem. It seems to be an error in my configurati…… -
Java – taglibs and variable declarations generate blank lines at the top of the source page
I declared some taglibs and variables in the JSP page, as follows: <%@ page language="java" contentType="text/html;…… -
Java – set powemockito static
I want to use powermock and mockito to simulate some static method calls I have followed the instructions and examples…… -
Multithreading – you can wait for network on windows Socket. Accept Haskell or Haskell OS thread?
-- thread A -- thread A t <- forkIO $do _ <- accept listener -- blocks -- thread B killThread t On Linux (pos…… -
How to compare image similarity using java
Recently, I had the opportunity to cooperate with image processing technology. As part of my project, my task is to fi…… -
X509 serial number uses Java
I need to get some data from x509 certificate If I open a certificate file in windows, its serial number is displayed …… -
What is the best way for Java programs to monitor system health?
I hope to monitor my main system health indicators from within our Java based system The main points of interest inclu…… -
How do I back up ArrayList in Java?
I have some data stored as ArrayList When I want to back up this data, Java will always define two objects This means …… -
Java – how to pass string as input in FreeMarker?
There is already an answer to this question: > 4 load FreeMarker templates from database However, I didn't find any…… -
Is the Java Native Interface (JNI) affected by C ABI compatibility issues?
Is the Java Native Interface (JNI) affected by C ABI compatibility issues? I am developing a Java application I want t…… -
Circular reasoning Java lambda grouping
I am familiar with Lambdas and confused with the error I made in this line of code: HashMap<Date,ArrayList<Trade…… -
Hashtable and integer keys in Java
I am trying to create a hashtable as follows: Hashtable<int,ArrayList<byte>> block = new Hashtable<int,…… -
Java – set the window of the eclipse E4 application to have the entire screen size
How to use application Define in e4xmi that I want my window to have the size of the entire available screen? Solution…… -
Java – how to make Apache Tomcat accept the delete method
I'm developing a restful web services project. I'm using Apache Tomcat and jax-rs I want to accept the delete request …… -
How do I reset the file pointer to the beginning of a file in Java?
I'm writing a program in Java. I need to compare the data in two files I have to check each line of file 2 from each l…… -
Java – how to assign method reference values to runnable
I discussed the problem of Java 8 runnable public static void main(String[] args) { Runnable r1 = Test::t1; Ru…… -
Java – fair setting in semaphore class
I'm trying to understand the usefulness of fair property in semaphore grade Specifically, reference Javadoc to mention…… -
Virtual machine – how does the vagrant package save changes to the new box
My question is about this here, but I didn't let it work I use from vagrant@R_355_2419 @.es( http://goo.gl/KwQSa2 ）I …… -
Java equals(): reflect or not
This problem is related to the equals () method of objects that cover a large number of fields First of all, let me sa…… -
Java – Auto boxing: so I can write: integer I = 0; Instead: integer I = new integer (0);
Automatic packing seems to come down to the fact that I can write: Integer i = 0; Substitute: Integer i = new Integer(……