包含标签：Java 的文章
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Java – why does the scheduleatfixedrate – schedulewithfixeddelay method not use callable
I'm doing some experiments on Java 8 concurrency In the scheduledthreadpoolexecutor API I can see the following two si…… -
Java – set vs list vs array as return type of EJB method
I was recently told that collection should take precedence over list as the return value of EJB methods The argument i…… -
Java – JUnit Derby spring: the in memory database is discarded after each test
In my unit test, I automatically installed some data sources using URLs jdbc:derby:memory:mydb;create=true Create dB i…… -
Java – explains the behavior of automatically incrementing a composite ID sequence using hibernate mapping
I have a table CREATE TABLE `SomeEntity` ( `id` int(11) NOT NULL AUTO_INCREMENT,`subid` int(11) NOT NULL DEFAULT …… -
Is there OLE automation in Java?
Can OLE automation be used in Java? If not, why is it impossible in Java? I want to automatically export Excel spreads…… -
Array – call the constructor with array parameters from PowerShell
I am a beginner and know c# moderation Recently, I was writing this power shell script and wanted to create a HashSet …… -
What kind of Java syntax is “= = null? False: true;”
I'm looking at the code and wondering what this means: Boolean foo = request.getParameter("foo") == null? false:true; …… -
Java: how to check whether a lock can be acquired?
If I want to ensure exclusive access to objects in Java, I can write this: ... Zoo zoo = findZoo(); synchronized(zoo) …… -
Java – stores the contents of a text file line by line into an array
All, the problem I'm facing now is that I don't know how to store the contents of the text file in the array Is it pos…… -
Java generics and number classes
I want to create a method to compare a number, but can have an input of any subclass of a number I see this in the fol…… -
Haskell – parallel strategy using Monad
I often see the use and interpretation of Haskell's parallel strategy related to pure computing (such as FIB) However,…… -
Are the default values of Java annotations compiled into bytecode?
I tried to implement several static analyses for Java bytecode They try to calculate whether a method has specific pro…… -
Java – learn about spring boot
I try to understand the difference between spring boot and spring boot web Starting from this boot tutorial, POM inclu…… -
Java – how to check how many threads are waiting for the synchronization method to unlock
Is there any way to check how many threads are waiting for the synchronization method to unlock? I want to know when a…… -
Java – push notifications in spring MVC webapp
I am writing a forum web application using spring MVC I'm just a beginner in spring. Now it's only a week I need help.…… -
Java – pass the parameterized class instance to the constructor
I have lost my way through the jungle, please help me:) I have such a thing: public class BaseClass<TYPE> { …… -
Java – project Euler problem #12
I have always been happy to challenge with project Euler. I noticed that my solution 12 is my slowest speed, reaching …… -
How to set a switch statement in a Java loop
I want to perform a switch in the while loop. At the break of each switch statement, the while loop stops and requires…… -
Unit tests – run JUnit tests using SBT
I have a 0.13 7 SBT project has several subprojects One of them is called webapp, which has many JUnit tests in webapp…… -
Java – unchecked exceptions will be better checked
I realize that in Java, the relative advantage between checking exceptions and unchecked exceptions is a be example di…… -
Java – OSS implementation of Google application engine?
After Google first launched map reduce, the community launched Hadoop. Is there an OSS Google App Engine project? Or, …… -
Java – will The war file deployed to Tomcat 8 works normally in the IDE, but when I deploy to my VPS, I lose all JS and CSS
I have a spring boot application When I started running Tomcat 8.0 in my IntelliJ IDE_ I have no problem. It looks gre…… -
Java – extends multiple classes
I know that Java does not support multiple inheritance because it does not allow multiple classes to be extended I jus…… -
Java – parsing of external (third-party) beans
I know it's still not very popular because the specification was released a few months ago I haven't "installed" weldi…… -
This is Java What does the execute () method call mean?
I'm reading the Sun Java Tutorial. I see this page here: How to Make an Applet Under the heading "threads in applets",…… -
Java – how to find fully qualified table columns from hibernate metadatasources
I have an entity, and I have a class < myentity > reference: @Entity class MyEntity { @Id int id; @Colum…… -
Java – how to give an enumeration “valueof” with a class name?
Suppose I have a simple enum named animal, which is defined as: public enum Animal { CAT,DOG } I have a method, su…… -
How do i disable the intrinsic function usage of the JIT compiler?
I'm doing some performance tests on the JVM and I want to measure the impact of the use of intrinsic functions I want …… -
Java – grouping sequences is a subsequence of a given sum with dictionary priority
I'm looking for a way to search for subsequences in a given sequence that sum up to a given number (sum, here 4) and h…… -
Java – how do we draw a line between two panels
I just want to connect the panel by drawing lines I have two panels, both of which contain a JTable I want to connect …… -
Java – eclipse RCP: using the configuration directory
My eclipse RCP application needs a configuration file that contains some information about connecting to a remote data…… -
Java – thinking in App Engine
I am looking for resources to help me migrate my design skills from traditional RDBMS data store to App Engine datasto……