Java
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Java – no authenticationprovider found usernamepasswordauthenticationtoken
My web XML configuration is <filter> <filter-name>springSecurityFilterChain</filter-name> …… -
How to disable log4j logging from Java code
I use log4j to write to the old version Library of logs My default log4j The properties file points logs to the consol…… -
Common problems and solutions of connecting JDBC to Oracle Database
Note: This article is compiled from the questions and various answers of the majority of webfriends extracted from the…… -
An example shows how to compress and decompress 7z files using Java
Compressed into 7z files. Firstly, there is little compressed content of 7z on the network. In particular, fewer Java …… -
Java – jsch: how to keep a conversation active
I am using SSH to write a Java GUI program for static route management My code is as follows: import com.jcraft.jsch.*…… -
Detailed explanation of spring boot and mybatis integration optimization
Springboot official documentation http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/ -
How to maintain Java webapps in different segmentation environments?
You may have a set of properties that are used on the developer machine, from developer to developer, another set for …… -
Java – when will static nested classes (and static members in them) be loaded into memory?
Here, I try to use the internal static helper class to implement the singleton class for my database connection: packa…… -
Java – how can I call a method of a null object?
public class JavaPuzzler { public class JavaPuzzler { public static void main(String[] args) { JavaPuzzler ja…… -
Why does Java polymorphism not work in my example
I have these four Java claims: public class Rect { double width; double height; String color; public …… -
Java syntax for a list of comparable objects
I'm writing a method that takes unique parameters as a list of comparable objects and returns nothing I'm not sure wha…… -
What should be the size of the icon in the Java – alertdialog?
I'm trying to assign an icon to an alertdialog, but I keep getting a memory error (seems to be from the size of the ic…… -
Why does setting properties in a session sometimes fail in a java servlet?
I am developing a fairly simple web application using JSP and java servlet running on Tomcat I have been able to set p…… -
Java – how to exclude a single variable using tostrimbuilder
I have an object that contains many variables, but one of them is bytearray, for example public class DataWithFields {…… -
Java – how do I adjust the hue of a color code?
Maybe someone knows that one method in Java (Android) is to apply hue to color code? For example, if I have #1589ff an…… -
Java – in JBoss 7.1 A component named “XXX” has been defined in this module of 1
Timerservicedispatcher is not used in my application to create spring bean names However, the exception thrown by JBos…… -
Allow two or more mobile virtual machines to communicate on their own network
I want to create multiple servers that can communicate directly without using public IP They still need internet acces…… -
Java – the application starts searching for GPS when the application starts, not when needed
>I have an Android application that includes Google Maps V2 as part of the feature <uses-permission android:name…… -
Java – gson JSON parser array
I want to parse some JSON and parse the array Unfortunately, I can't figure out how to handle nested arrays in JSON JS…… -
How does Java and Android darken ImageView
As IOS developers told me, IOS darkens the image when someone clicks it (I don't know how real it is), so I need the s…… -
Java: how to add SSL client authentication
I have this code to connect the server and the client using SSL. Now I want to add client authentication: (I have a se…… -
Java – fix malformed ellipses in strings
I want to fix malformed ellipses (...) in string "Hello.. World.." "Hello... World..." // this is correct "Hello..…… -
Java – master Google Guice
I just started using Google Guice as a dependency injection framework and tried to transform it into a small and mediu…… -
Pass multiple parameters in the App Engine task queue (Java)
Is there any way to pass multiple parameters in the Google App Engine queue? Queue queue = QueueFactory.getQueue("sms-…… -
Java – develop plug-in 6.8 for NetBeans
I want to develop a plug-in for NetBeans 6.8, but I can't find enough tutorials / resources / articles The only decent…… -
Java – determines whether static methods are purely functional
Given a Java lang.reflect. Method object, regardless of whether the method is a pure function (that is, given the same…… -
Java – hosting widgets in the Android launcher
I'm making an Android launcher and I'm stuck in the widget section I've been searching the Internet for about an hour …… -
JUnit – arquillian: wildly embedded?
So far, I have used arquillian and embedded GlassFish 4 X has been tested When I encountered the bug arq-1458, I tried…… -
Java – implements utility classes and singletons using enumerations
Peter Lawley wrote about two uses of enums that most people forget on his blog First, I didn't forget – I didn't even …… -
Does Java IO have the maximum file name length?
Different operating systems have different maximum file names Does java have any restrictions on the length of file na…… -
The future of SAP Java connector
Is SAP Java connector still a good way to connect Java applications to sap? Will connectors be supported and maintaine……