包含标签：Java 的文章
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java – URLConnection setRequestProperty vs addRequestProperty
Let me say I'm talking about HTTP to a web server. I will accept HTML or text, but I prefer HTML In other words, the t…… -
Java – use wildcards to create new generic objects
Please explain the compilation time error of this generic code wildcard: //no compile time error. List<? extends Nu…… -
Java – play! The framework returns a JSON response
I use play! Framework 2.0 and I are new in this framework How to return only the JSON representation of my model in a …… -
Java – dependency management and maven
I recently became a big fan of Maven to control the build cycle of my application However, I encountered some rough ed…… -
Java – enables NetBeans (ANT) to generate multiple jar files for a project
I have a NetBeans project with two main classes. One starts a client and the other starts a server I need to create tw…… -
Learn Java, so I can get clojure
I have a history of hating Java. In the "slow ball" era, I often used it in the late 1990s Therefore, I never really u…… -
java – Spring Batch：org. springframework. batch. item. Reader notopenexception: the reader must open it before reading
I read about the problem, but the solution didn't work for me I got org springframework. batch. item. Reader not opene…… -
Java – unable to resolve symbols for powermockrunner
I tried powermock for the first time I use build Gradle and add: dependencies { ... testCompile 'org.mockito:mocki…… -
Java – write toString () once and for all?
I want all my classes to implement toString () in the same way using java reflection I came up with two ways >Creat…… -
Java – how to manually map enumeration fields in jax-rs
How to map a simple JSON object {"status": "successful"} to Java enum in jax-rs automatically? public enum Status { …… -
DFA Based regular expression engine with captured Java
Is there any (free) regular expression engine for Java that can compile regular expressions into DFA and capture combi…… -
Java – why doesn’t class have a good generic type in this case?
In this code, why can't you declare a type as class? Extension b > public class Foo<B> { public void doSo…… -
Java – local or instance members
The following code proves that method1 is faster than method2 Anyone can comment on the reasons for this behavior clas…… -
Rxjava / rxbinding: how to handle errors on rxview
I use RX Java and rxbindings to view in Android Here's an example of what I'm doing RxView.clicks(btMyButton).flatMap(…… -
Java – detect mouse entry / exit events anywhere in JPanel
Basically, there is a JPanel. I want to know when the mouse enters the JPanel area and exits the JPanel area So I adde…… -
Different users under Linux are preferred for Java system
I try to run multiple JVMs (including Tomcat) of different users on a Linux frame I don't see too many problems, but i…… -
java – Gson：JsonSyntaxException on date
I tried to deserialize a JSON array using gson, but I'm getting a jsonsyntaxexception The JSON string is generated by …… -
Java – how to get crc64 distributed computing (using its linear properties)?
I need to spread over large files stored on distributed FS I can handle parts of the file better than the whole file, …… -
When trying to read a file in HDFS from Java, “wrong FS… Expected: File: / /”
I can't read files from HDFS using Java: String hdfsUrl = "hdfs://<ip>:<port>"; Configuration configuratio…… -
Multithreading – is the method pointer assignment thread safe?
Example: Suppose I have the following clues (please do not consider the contents used in the thread context execution …… -
Java – = and =
I've been misplaced = many times, I think I've always forgotten, because I don't know the difference between the two. …… -
Java – hotswaping code to “mvndebug Tomcat: run”
Usually I use mvndebug Tomcat: run to start Tomcat After the code changes, I need to use MVN Tomcat: redeploy This is …… -
Java – how to pass map parameters or objects to post requests through transformation?
I encountered a problem passing a map parameter or object to a retrofit post request I follow square, kdubb labs tutor…… -
Java. Java in JDK class lang.ref. Memory leak of WeakReference object
The following simple code reproduces Java. Java in the heap lang.ref. Growth of WeakReference objects: public static v…… -
Glassfish 3.1. 2 JDBC realm has a new password encryption algorithm field what is it?
The GlassFish JDBC realm has several different properties that you can set I'm interested in digest algorithm and pass…… -
Java – Maven compilation dies of “kill”
I run a large java project compiled by Maven 2 on a Linux virtual machine [debug] source source: [debug] / home / {...…… -
Java – hibernate search, Lucene or any other option?
I have a query to do Ilike on the size of string or text field (500000) in Table 11, but Ilike is obviously too large,…… -
Java – spring MVC test result 415 error
I'm trying to write integration tests for rest APIs implemented using spring MVC This is my rest implementation: impor…… -
Java – jedis – when to use returnbrokenresource()
When we should use this method In jedisconnectionexception, jedisdataexception or any jedisexception For jedis, my kno…… -
Java RMI – client timeout
I am using Java RMI to build a distributed system, which must support server loss If my client uses RMI to connect to …… -
Java – optimizationlockexception when JPA merge() is used
I have a rest app where a resource can be updated Here are two ways to accomplish this task: > updateWithRelatedEnt…… -
Clojure macro for calling Java setter based on map?
I wrote a clojure wrapper for the Braintree Java library to provide a more concise and idiomatic interface I want to p……