Java
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Java – eclipse shortcut for declaring variable names as method parameters
Suppose we have such a variable: byte[] someByteArray; And such a method prototype: public void someMethodRequiringStr…… -
Java – password protected applications in Tomcat
I am developing web applications using jsp servlet, and I use Tomcat 7.0 33 as a web container So my requirement is th…… -
Java – how to get entity size in gae / J?
The gae document mentions that the maximum entity size is 1MB Because I store a lot of data in entities, I want to kno…… -
Java – getting started with Oracle Database
I was assigned the task of making Java Web applications work with Oracle databases I don't know where to start I hope …… -
Java – localize Jfilechooser “all files” string
I'm using Jfilechooser to develop a Java application where users can switch languages Locale.setDefault( Locale.ENGLIS…… -
Java – exceptionhandler in spring
import org.springframework.beans.TypeMismatchException; import org.springframework.beans.TypeMismatchException; import…… -
Java – spring JDBC declarative transaction management in karaf
I have a project module that is built as an OSGi package (spring DM) I can't set up declarative transactions. Someone …… -
Java – check whether the object is an instance of list
I have an object that sometimes contains list < Object > I want to check it with instanceof, and if so, add some…… -
Java – JPA one-to-one relationship, where the entity may not exist
I have many to one mapping between two entities (A and B, and a B can be associated with many as). I need to be able t…… -
JNI returns the signal 7 function and tries to call Java from C
I want to make a call from C to Java I try to call a function to invert a bool value without parameters This is my C c…… -
java – Jongo vs(DBObject)JSON. parse
I try to find out the advantages of Jongo instead of simply using (dbobject) JSON Parse (...) unmarshalls the JSON com…… -
Avoid nesting if else / switches – Java
I'm reviewing some code (Java) and making changes according to the business logic flowchart The current code relies on…… -
Java – store data in memory
I have "table a" in the database, which contains three columns "col 1", "col 2" and "col 3", with about 1000000 (1 mil…… -
Java – the real advantage of the factory model
I've been using the factory model for a year Sometimes I just think the real advantage is clean code Let me explain, i…… -
Java is equivalent to Matlab’s’ EPS’ or numpy / Python’s’ spacing ‘function (floating point relative precision)
background Matlab's built-in EPS function [1] can take a value x and return "the positive distance from ABS (x) to the…… -
Javaw still creates a console window; Why?
See English answer > start a java program without the console6 java -jar Jython.jar init.py However, when I change …… -
Java swing gridbaglayout panel resizing problem
I'm making a simple little swing application for a relative, but I'm having trouble animating it This is the descripti…… -
Connecting from Java to SQL server using JDBC (Windows authentication mode)
I need to use JDBC 4.0 to connect from Java to SQL Server 2008.0 Class.forName("com.microsoft.sqlserver.jdbc.sqlServer…… -
Java – when to call getpreferredscrollableviewportsize() when laying out JScrollPane?
To implement the scrollable interface, you need to implement the getpreferredscrollableviewportsize () method This usu…… -
Java – use ‘select’ tags and entities in thymeleaf
I am creating a form with a select tag as follows: <form th:object="${version}" method="post" class="form-horizonta…… -
Java – XY position of a certain Z depth
In processing (Java dialect), there are methods screenx, screeny (and screenz, but we'll skip it now) Suppose I have a…… -
Java – hibernate sqlfragment memory leak?
I deployed a simple webapp on the Tomcat server Webapp is a rest web service. Each web resource loads data from MySQL …… -
java – ExecutorService. Submit (callable) returns a null value for the future object
I am using executorservice to generate threads that perform different tasks When submitting the (callable < T >)…… -
Java – regular expressions X and / or y
Consider the following regular expressions, where x and y are any regular expressions XY|YX|X|Y This regular expressio…… -
Java – how to use ebean to query tables with one to any and many to one relationships
I'm using play framework 2.1 0 and ebean, encountered a problem when querying the following scenarios listed below: I …… -
Asynchronous I / O – Java
I've been looking for details about the benefits of asynchronous I / O in Java, especially from application stack desi…… -
The fastest way to query XML in Java
See English answer > efficient parser for large xmls4 DOM – XPath: this takes a lot of time, DocumentBuilderFactory…… -
Symfony – how to combine translatable and sluggable in doctrine extensions?
I have installed https://github.com/stof/StofDoctrineExtensionsBundle And use translatable and sluggable on specific f…… -
The best way to distinguish between estale and enoent in Java
I am trying to write Java applications running in Linux environment on NFS file system I noticed that when I called Ja…… -
Play framework 2.1 Java / Eclipse: automatic reload does not work
Question /: >The view is being compiled, but if you do not manually restart the server, refreshing in the browser w…… -
Java – regular expression lookup substring
Suppose I have a substring BB, which can be separate or part of a longer string, such as BB or AA | BB | CC or BB | CC…… -
java – GrizzlyServerFactory. The difference between createhttpserver and the new grizzly webserver
I am using Jersey and embedded grizzly web server to create restful web services I see two ways to create an embedded ……
