包含标签：Java 的文章
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JFrame retain() problem – Java
I want to be able to draw using java paint () on JFrame When I click on the JFrame (anywhere now), I want to redraw th…… -
How to use JUnit to get database connection in spring?
I am trying to use the correct logic of services and methods to test the correct information provided by dB In this si…… -
What are the security options for Internet Oriented Web servers in Java?
I need to implement a server that can be accessed publicly from the Internet The server has a very simple task: >Ac…… -
Registering Java swing with event types
In Java swing, I can register a listener to a GUI event, as shown below guiElement.addMouseListener(myListener); But w…… -
Warning developers to invoke `super. in Java foo()`
Suppose I have these two classes, one extending the other public class Bar{ public void foo(){ } } public …… -
Is there a good alternative to serializing enumerations in Java?
The Java language benefits a lot from adding enumerations; Unfortunately, they don't work when sending serialized obje…… -
Java – hazelcast thread prevents tomee from stopping
context We want to use hazelcast as our jcache implementation in tomee Because we don't need crazy performance, we wan…… -
Java – performs DOM node to string conversion, but there is a namespace problem
So we have an XML document with a custom namespace (XML is generated by software beyond our control. It is parsed by D…… -
Java – user authentication failed: null
I have an API "vignette collab", which runs on an Apache stack with Java. I inherit a legacy code base and need to fin…… -
Java – how to calculate the shortest unique prefix for a set of strings?
This is a very common algorithm in command - line parsing Given a predefined set of long option names – calculates the…… -
Where is the current version of the Java virtual machine specification?
It seems that the only way to obtain the Java 6 version of the Java virtual machine specification is to adopt the seco…… -
Java – just in time doesn’t work
When I click Run, I encounter this problem in Android studio 2.3: 03/09 19:02:36: Launching app $adb shell am startser…… -
Send Skype messages in Java using taskan’s Java Skype API
My java project needs help I'm trying to send a message in a Skype conversation when a specific action occurs For this…… -
Java – XML file with & auml;
I have an XML file roughly as follows: <customer> <name>Müller</name> </customer>…… -
Java – swagger doc (type list) for API response
I'm using swagger to document my rest API However, I encountered a problem specifying the response for some API calls …… -
Java – how secure is internal storage?
What I need: For Android: I need to permanently save the data, but I can also edit (obviously read) it Users should no…… -
Java-8 – intersection of collection flows to new collections
Is there a better and simpler way to solve this problem? @Test public void testReduce() { Set<Integer> foo =…… -
What is the name of this Java state based design pattern?
In my work, we conducted a survey. A survey involves multiple steps I work in automation, so I design tests around the…… -
Java – eclipse Google App Engine “not enhanced”
First eclipse: Can't get rid of this error... I've tried every suggested fix on Google The persistence class "com.blah…… -
Constants and attributes in Java
Java best practices recommend reading properties as constants So what do you think is the best way to achieve your goa…… -
Java signature jar and server certificate
Can I sign a Java Web launch application using a server certificate? What I want to know is whether it works My server…… -
Java – replace switch with binaryoperator
I'm trying to replace the common switch for arithmetic operations with the binaryoperator function interface The basic…… -
Get image acquisition hardware from Java
How to realize image acquisition from hardware scanner in windows? I found the jtwain library, but it's commercial Is …… -
Java – call breakpoints do not work in JUnit tests in eclipse
I tried to debug the JUnit test in the eclipse, but my breakpoints did not trigger (unless they were in the first or s…… -
Java – this puzzling generic pattern crashes eclipse – can I make it work?
(I am using eclipse Luna 4.4.0, JDK 1.8.0_05) I'm making a game. The topology of the game world can be roughly divided…… -
Which is the best JSON rewriter in Java?
Which JSON rewriter is best suited for applications written in Java? Standards may vary I am most interested in stabil…… -
Storing / reusing intermediate results on Java 8 streams
I have a list of A. to perform filtering, I need to map a to B. but once the filtering logic is completed, I still nee…… -
Java – how to return xxxsize from JComponent added to jlabel
How to correctly return xxsize from JComponent added to jlabel 1. Figure > > make layoutmanager work like JPanel…… -
Multithreading – a method to get the number of cores executing programs on a task node?
For example I need to get a list of all available executors and their respective multithreading capacity (not the tota…… -
How to distinguish textfield Settext() and manually add text to textfield in Java?
I have a textfield in my application. When the user clicks in an item in JList, it will start programmatically (textfi…… -
Java – how do I concatenate list items but use different delimiters for the last item?
The following list is given: List and lt; String > Names = lists Newarraylist ("George", "John", "Paul", "Ringo") I…… -
Access HashSet directly using hashcode? (JAVA)
Hi, I want to know if you can directly access the content of the HashSet if you have the hashcode of the object you ar……