包含标签：Java 的文章
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Java – send and receive serialized objects over UDP
I tried to send a serialized object from the server process to the client process in Java using UDP The problem is tha…… -
Java – guava: why method create () instead of constructor?
Excuse me, can you explain why guava creators like to define constructors as private and define static methods create …… -
Java – ant buildfile cannot put the jar file into the classpath when running other jar files
I'm new to ant build files. I've managed to build my build files to create my build directory structure, compile all m…… -
Open source JavaFX 2.0 component library [closed]
Do JavaFX 2.0 have any good component libraries / repositories? In particular, I am looking for open source projects t…… -
Java – how to create a copy of the same object using different references?
Friends, I'm facing a problem. I have a phonecontacts list, which contains names and phone numbers I want to copy it i…… -
Java – how to open a Lucene 4.3 index?
I'm new to Lucene. I'm trying to open a Lucene 4.3 index using Luke (I created it with my simple Lucene 4.3.1 applicat…… -
Java annotation processing: how do I know that a round is the last?
When abstractprocessor is extended, it is possible to override init (...), but there is no "opposite" method, which wi…… -
List and list in Java
ArrayList of list < InterfaceI > and list both have class objects that implement InterfaceI When should I use i…… -
Java – Jackson: multiple back reference attributes named ‘defaultreference’
I tried to map a JSON (string format) to an object, and I got the following error This is a JSON string {"pledge":"74"…… -
Java – how to run common code for most requests in spring MVC web app?
Namely I mapped various URLs using spring MVC requestmapping @RequestMapping(value = "/mystuff",method = RequestMethod…… -
Java – how do I format an integer as a string of four zeros?
I try to do something similar in Java (eclipse indigo): input - 16 (integer); Output - "0016" ; input - 201 (integer)…… -
How to convert a dataframe to a dataset in Apache spark in Java?
I can easily convert a dataframe to a Scala dataset: case class Person(name:String,age:Long) val df = ctx.read.json("/…… -
java – Eclipse 3.5. 1 compiler error: due to error on required Library/ The outputformat type cannot be accessed due to the restriction of rt.jar
The mistake is so strange that I can't understand it I have installed eclipse RCP 3.5 1, import com.sun.org.apache.xml…… -
Java – how to get form data in play framework
Before asking this question, I found this neat post (but it can't solve my problem): I'm trying to use the play framew…… -
Java – Android eclipse all spinner fonts turn white
In my project, all spinner fonts suddenly turn white, which is why I can't find it They were all black before For exam…… -
Java – keep the dead line alive
In an interview with me, I raised the following questions (a few years ago) I have argued that there is no way But he …… -
Java – how to verify a secure password Regular expression on char []?
This question is a follow-up to this question: Why is char[] preferred over String for passwords? This is a good quest…… -
Java – how to disable speed logging
I've been trying to disable the velocity log, and the only way I've found so far is to set the positive result: runtim…… -
Java – an efficient data structure to check whether a string exists
I'm writing a program that will add more and more numbers or unique strings to the data structure Once I'm done, I nee…… -
Java – how do I find the JPA version?
How do I understand the JPA version I use in EJBs? to greet Solution Using the Java EE 5 container, you will get JPA 1…… -
Java – how to change property values at run time in spring
I need to change properties in the application at run time My properties file has hours.expired=12 My service private …… -
. Net – does the StringBuilder initialized with a string contain the exact (only) space for the string?
I wonder if this code StringBuilder sb = new StringBuilder("Please read the following messages."); ... initialize sb w…… -
Java – use hibernate JPA to store objects in columns
Can I store things like the following that use only one table? Now, what hibernate will do is to create two tables, on…… -
Java – customize webargumentresolver, such as @ pathvariable
I want to use a custom webargumentresolver as the ID – > entity If I use the request parameter, it is simple enough…… -
How to provide preprocessing instructions in Java
There is already an answer to this question: > how to mark java code such that it's not compiled [C#] #define PRODU…… -
Java – why can I set – Xmx to a value greater than physical and virtual memory on windows and Solaris?
On a 64 bit windows machine (each task manager) with 12gb ram and 33gb virtual memory, I was able to run Java (1.6.0_0…… -
Java – find duplicate entries in the collection
Is there a tool or library that can find duplicate entries in the collection according to specific standards that can …… -
Threads in Java threads?
I am currently considering how to design a multithreaded system in Java that needs a lot of network processing and dat…… -
How to create blob objects in Java?
1. How to create blob objects in Java? I have created a blob object byte [] fileId=b.toByteArray(); Blob blob=new …… -
It’s a ‘. ” Member access is considered an operator in Java?
In Java, I can access public members of a class You can see in the second line of the main method of the following exa…… -
Java – IntelliJ and Maven source folder issues
I tried to create a simple java webapp using IntelliJ (v11.1.3) and integrate it with a simple Maven POM file to downl…… -
Java – the difference between opencv and OpenCL
Anyone can explain the difference between opencv and OpenCL? What is suitable for Android image processing in Java? So……