包含标签：Java 的文章
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Java – how to solve ‘define and throw special exceptions instead of using general exceptions.’
When the length of the two lists is not equal, I need to throw runtimeException We use the sonarqube tool for code rev…… -
Java – Proguard does not obscure jar dependencies
I have a project with POM given below XML file When I issue the command MVN clean compile assembly: single install, I …… -
Java – simulate a spring validator when unit testing the controller
When coding the unit test postmortem into the code created by another project, I encountered the problem of how to use…… -
Java – how to identify whether a string contains special characters that cannot be stored using utf8-mb4 character sets
Please refer to this tweet and the thread below. We are trying to store similar tweets to the database I can't store t…… -
Java – use huge memory in notifications
I am developing a service application that displays the progress of the timer in the notification area (with progress …… -
What is the difference between const and volatile pointers?
What is the difference between const and volatile pointers? Solution The difference really comes down to the differenc…… -
Java – optimistic cache concurrent design pattern
I have a web service running on a set of servers The network service performs some internal processing, and then you c…… -
Java – relative to the current date in the Dbunit dataset
I wonder if there is any way to specify, for example, tomorrow as the date in the Dbunit XML dataset Sometimes the cod…… -
Java – how to convert jsonobject to gson JsonObject？
I have an org json. Jsonobject object Create gson. From What is the simplest method of jsonobject object? thank you So…… -
How to set the default file name of swing Jfilechooser?
I want to set the default file name to untitled. In this Jfilechooser text box txt. Can I set it? Solution Use the fol…… -
Java – unit testing using Apache Mina as an emulated / in memory SFTP server
I'm working on how to use Apache Mina Their documents are a little inadequate for my powerless brain I've seen useful …… -
Code snippet for creating a file from the contents of a blob in Java
I have some files stored in the blob column of the database in Oracle 9 I want to store those files in the file system…… -
Java: datainputstream replaced with byte order
The following is my code to replace datainputstream to wrap an InputStream, but in addition to the common method of re…… -
Java – hibernate criteria: different entities and then restrictions
I have a standard to return all the data required by the application, basically: Criteria criteria = session.createCri…… -
Converting Java applications to Mac OS X applications
Is there a way to convert Java applications to Mac OS X executable applications? I use NetBeans to develop java, and I…… -
Populate check boxes in JSP pages with data from JavaBeans
I have a JSP page with check boxes in the HTML form, as shown below Now, when editing user skills, I want to get comma…… -
“Synchronized (this)” vs. “synchronized ((baseClass) this)” in Java
Is this variable being safely accessed by using synchronization? Heirs of For the following procedures, Class SubClass…… -
Java – spring: file upload restful Web Service
I am using spring 4.0 to create a PoC for restful web services @RequestMapping(value="/getcontent/file",method=Request…… -
Java – how to understand Maven dependency tree
Please forgive me if this is a dump problem, but I searched a lot and didn't understand how to actually read Maven dep…… -
Java – the error message “attempt to split long or double on the stack” indicates?
The following error occurred in my code: I am ignorant of the origin of this error and do not know how to debug it Wha…… -
Java – how to create docker image files and value parameters for local applications
I have a Java application (jar file) that I want to be able to run from the dock image I created a docker file to crea…… -
How to configure Java imported organizations in NetBeans
At present, NetBeans (I use version 7.3.1) has the built-in function of organizing java file import through the menu s…… -
Java – deploying spring boot applications in Weblogic
I deployed a spring boot application in Weblogic 12C 10.4. 4 403 prohibit the server from understanding the request, b…… -
Java – “with private access” errors and generics
I have a problem I can solve myself, but I still don't understand why my original code doesn't work, or if there is a …… -
Java – is this object mutable?
If I have such a class: @ h_ 301_ 2@public class MyObject { private int myField = 2; public void setMyField(int f) { t…… -
Java – have I implemented equals and hashcode correctly using Google guava?
I am using hibernate and need to rewrite equals and hashcode () I chose to use Google guava's equals and hashcode assi…… -
Java – what about Dagger’s custom range?
How to create a custom range with dagger? Are there any guidelines? I didn't find them I am developing vaadin applicat…… -
java – WSContext. Getuserprincipal() returns null for password digest validation
In my web service, I need to record the caller's ID, but wscontext Getuserprincipal() returns null, even if the user a…… -
Java – comparison of positive and negative zeros
Why is java inconsistent when comparing - 0.0 and 0.0? What is the Java standard way to compare numbers to - 0 / 0? I …… -
Java – best practices for controlling access to “. Internal” packages
I write eclipse plug-ins and export some classes as APIs, while I want to restrict access to other classes I follow ec…… -
Java – the best way to compare enumerations
See the English answer > comparing Java enum members: = = or equals()? 16 Color c1 = Brown,c2 = Red What is the bes…… -
java. Lang.illegalstateexception: cannot perform this operation after onsaveinstancestate: – fragment error
Hi, I use segment a and the second segment B. call B and use the asynctask method, but I use this first time, it works……