Recent Posts
-
Java – can we use conditions in URL mapping of servlet filter
Can I use the not condition as the URL mapping value of servlet filter? Solution No, it's impossible You can add this …… -
How does Java serviceloader work during development? (unit tests before building jars?)
Java's serviceloader requires these entries to exist in the jar file Is there any way to programmatically add these se…… -
Java – AES buffer size
I'm trying to apply this DES encryption sample to AES, so I made changes and tried to run this operation: import java.…… -
How to use jogl2 to hide the mouse cursor?
I am using jogl2 and nativewindow APIs to write Java applications What is the best / easiest way to hide the mouse cur…… -
Linked list – use the LinkedList class in Smalltalk?
I'm not sure I fully understand how to use the LinkedList class provided by Smalltalk visual works I can create an ins…… -
Java – findbugs: “the stream may not be closed” – is this valid in the case of InputStream?
In my java code, I start a new process and get its input stream to read it: BufferedReader reader = new BufferedReader…… -
Strange problems of simple multithreaded programs in Java
I just started playing multithreaded programming I want my program to alternate the characters' – 'and', but that's no…… -
Java – how to handle exceptions if a try block is followed at the end
If I ended up using only the catch block, how would I handle exceptions Solution The exception will be passed up the c…… -
Java – make Jface tableviewer use the composite around it to resize?
Using WindowBuilder for eclipse, I created a tableviewer, which is placed in a complex (tableviewer creates an SWT tab…… -
Java – is there a standard location for storing spring library jar files?
I have downloaded spring 3.0 with dependencies 2. It is found that it contains 405 jar files I usually save third-part…… -
Java – how to scroll content to the bottom by default in jtextpane?
My window has jtextpane and I have jtextfield When I enter enter in jtextfield, the text will be added to jtextpane Ev…… -
Java – use the layout to set the panel in the center of the screen
I try to set the position of the child panel in the center of the parent panel by using parent_panel.setLayout(new Bor…… -
Java – how to add a throws exception clause when implementing a defined method in an interface without a throws clause?
I need a class to browse the collection, and then I implement the iterator interface The only exception thrown by next…… -
What’s the difference between Java – serialized objects because they can persist?
We know that serializable is a tag interface (that is, an interface without any methods) So I want to know how to impl…… -
Building timezone objects in Java
I use the timezone string to build Java timezone objects, such as GMT-8, GMT, PST, EST, etc So if I get inputs like PS…… -
Java – JPA – using annotations in the model
My application runs on JPA / Hibernate, spring and wicket I'm trying to convert our ORM from XML file to JPA annotatio…… -
Java – how can two Android applications share the same user ID?
I remember reading somewhere that you can let two Android applications share the same user ID, but I heard conflicting…… -
Java – why does TestNG skip my tests?
This is the code: @DataProvider(name = "DataSource") public String dataProvider() { String name = "ramesh"; …… -
Java – ThreadLocal (and singleton) in EJB container
I wrote an authorization system that relies on objects representing the current user To simplify programming and impro…… -
Java – why does each thread in my application use a different hibernate session?
I have a web application using hibernate. For some reason, each thread (httprequest or other threads related to queuin…… -
How to read a Java stream before reaching a certain byte
My question is similar to this article But I will not send the packet length instead of the last 0 bytes So I want to …… -
Unable to read special characters (Java)
I'm making a chat client using special encryption There is a problem reading letters such as «, ƒ, letters from the in…… -
How to use Java program to detect Internet connection
How to write a java program and tell me whether I have Internet access I don't want to Ping or create a connection to …… -
Simple physical simulation in Java does not work properly
I want to achieve ball physics, as a novice, I adjust the code in the tutorial. I try to do my best, but I can't apply…… -
java – TELEPHONY_ The service constant is not recognized in one class, but in another
It feels very much like another situation where you don't see the woods I have written a small (non extended) class fo…… -
Java – how to analyze heap dumps using jhat
I ran jhat on the heap dump and it generated a report How do I use reports to analyze the heap I can't fully understan…… -
Using Java awt. Robot simulation backspace key
Using Java awt. There seems to be a problem with robot's simulated backspace key This thread seems to confirm this, bu…… -
How to download CSV files using java servlets?
I have a sample java servlet file But it is exported to a local file But do I need to download the CSV file when I cli…… -
Java – how to read international characters from the console
How to read international characters from the console in Java? Solution Using Java io. Console class, just like any ot…… -
Java – if we don’t generate windows, why doesn’t timer work?
This is the code: import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JFrame;…… -
Java – how does my jar open itself as a stream?
I'm trying to open a jar as a stream, but I can't understand where to get this stream JarInputStream s = new JarInputS…… -
Java – Android – end activity within rendering thread
Good afternoon. I am not familiar with the activity life cycle in Android and read it as much as possible, but I can't……