Java
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Java – how to prevent JComponent cleanup?
I'm making a molecular design application I can draw lines and circles, but it clears the old lines every time I click…… -
Java – why is the URL not fully decoded?
I'm writing a java program. My URL needs to be decoded. I'm using it URLDecoder.decode(url,"UTF-8") How to implement i…… -
Java – set block data from schematic in bukkit?
I tried to load and paste in bukkit Schematic file (not linked to mcedit API) Here are the functions / methods I use t…… -
Java – AdMob doesn’t work because (I think) Google playback service
I'm trying how to advertise an AdMob banner for at least 6 hours 01-21 18:59:26.768: I/Ads(26882): Use AdRequest.Build…… -
Java – count of string objects created
I'm reading the certificate and I'm having a confusing problem here The book says that this line of code creates only …… -
Java / refactoring switch case
I tried to reconstruct the next case: class Gen{ public void startClick(A a,B b,List<C> lstC,SortX sort){ …… -
Java – why does log4j completely record everything in debug?
So I have a problem. When I switch the root logger to debug, log4j seems to want to record everything that can be "deb…… -
RX Java operator; Encapsulate data streams into custom operators
Let's say I'm observing an observer in a very specific way resultObservable = anotherObservable.filter(~Filter code~).…… -
Fork / join Java EE applications?
I know that separating threads is a big taboo in Java EE applications However, I have an application that is a perfect…… -
Java – strange behavior of quickfix / J after “sending test request test”
I am using quickfix / J to receive messages, but a test request has been sent The log file (fix. 4.2-a-b.event. Log) s…… -
Java – private constructors and instances – multiple choice
I try to find the answers to the following questions I tried to find the answer on Google, but people seem to have dif…… -
How to add a date to the java simple date format
How can I add 120 days to the date I currently use simple date format? I've read very few posts about it, but I can't …… -
Java – transitive Maven dependency depends on: tree but not displayed in lib directory
I'm using Maven 3.0 Build a large java project My POM XML has a parent, which depends on spring context (compilation s…… -
Synchronize queues in Java on multiple threads
I understand the concept of synchronization, but now I'm sure why it's implemented in this way, so I need a little hel…… -
Java – why are caps not sorted correctly here?
I'm trying to sort items in list < string > This is an unordered list and how it is currently sorted: Unsorted: …… -
Java – recursive method: why do I need a return statement?
Just to practice recursion, I wrote a classic introduction to recursion - a function that checks whether a given strin…… -
Java – in a convertible cast, convert from t to double
I want to create a generic method to get the maximum value from an array But I met T and math Max method uses conversi…… -
Java – in JBoss EAP 6.2 Access hornetq connection factory through JNDI in 0 (local)
I have deployed a web application (JMS API. War) in JBoss. I hope to obtain a JMS connection factory from JNDI through…… -
Java – select query using composite primary key
In the spring MVC app using hibernate and JPA, I recently used the @ embeddable class to switch to the composite prima…… -
java – Tomcat Jersey Eclipse ClassNotFound org. glassfish. jersey. servlet. ServletContainer
I'm running the Hello world example However, I use version 2.7 At Maven POM I have <project xmlns="http://maven.apa…… -
Java – query dynamo tables using only secondary global indexes
I tried to query the dynamodb table using the auxiliary global index, and I got Java Lang.illegalargumentexception: il…… -
Hosting Java WebService on live server
I am new to Java Web services and need help to understand how to host web services on a web server I successfully crea…… -
Java – when running updates on SQLite, “there are no such columns”
I'm trying to update a row in the database This is the code I'm trying to update: public void addFBComments(int id){ …… -
Use Java 8’s lambda as a method parameter to avoid redundancy
I have a class with many methods like this (very simplified): public Record[] getRecordForXXX(String username,String p…… -
Java servlet DB username and password storage location
I am a beginner of servlet Solution Can I store DB users and pass them in to the web XML for easy configuration? >O…… -
Java – how do I receive multiple files in InputStream and process them accordingly?
I want to receive multiple files uploaded from the client I uploaded multiple files and requested my server (Java) usi…… -
Java – correct logic, select a card randomly from the card holder until all cards are selected
I need some advice here I want to create a logic that randomly selects one card from a deck of 52 cards until all card…… -
Java – why do many projects only provide source code instead of downloaded jars?
I've seen a lot of projects, including resources provided by big companies such as elephant bird (twitter) and Akela (…… -
Java – how does the competitive condition in toctou work?
The following code should be vulnerable to toctou attacks: public Period(final Date start,final Date end) { if (st…… -
Java – why does jsoup delete inline style sheets?
I use jsoup to protect my application from XSS attacks I get all the input parameters and do jsup clean. But I have a …… -
Java – implements class methods inherited from two interfaces with different return types
I have two interfaces and a class that implements them: interface A { int test(); } interface B { void test()…… -
Custom security mechanism in Java EE 6 / 7 applications
I want to create (by myself) an authentication mechanism As far as I know, I have to implement loginmodule and connect……