Java
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Rest Java Web services use protobuf
I want to use Java & protobuf Anyone can point out where to start or how to achieve it? Any good tutorials? thank …… -
Java – why does a single threaded process execute on multiple processors / cores?
Say I run a simple single threaded process, as follows: public class SirCountALot { public static void main(String…… -
How to start RMI registry through Java code?
I write Java programs for clients and servers However, to run this program, I need to manually start the RMI registry!…… -
How to correctly use @ checkfornull, @ nonnull and @ nullable annotations of findbugs
I want to formally annotate my function signature to clarify their contract - especially if NULL params and return val…… -
How to generate program dependency graph (PDG) from bytecode in Java
I want to generate a program dependency graph (PDG) from Java bytecode for further programmatic analysis Since this is…… -
Java – internal class extension
In Java, I have the following classes: public class A{ protected class B{ } } Can internal classes be extended in …… -
Java – when does recursive backtracking apply?
I'm creating a sudokusolver for a class, and I'm having trouble solving it My current solution uses recursive backtrac…… -
Java – manually add songs to mediastore as music tracks
I want to create a music player that can download songs online and add them to the mediastore I am using the download …… -
Java：JFrame. Setlocationrelativeto (null) is not available as Ubuntu 10.04 / Gnome 2.30 2 window centered openjdk 1.6 0_ eighteen
Example code: JFrame jFrame = new JFrame("Test"); jFrame.setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE); jFram…… -
The class generated by Java – querydsl cannot access the second level element for query
I use querydsl with spring data JPA in my java project, and use the file generated by querydsl Maven plug-in to use th…… -
Java – check the checkbox selection in the listener
At present, we are working hard, but Jface has encountered a small problem This is the code Button btnConfirm = new Bu…… -
Memory size of Java 32-bit system int [] array
In Java, the memory used to occupy an int [] array of size n is equal to (4 N) * 4 bytes In fact, it can be proved by …… -
Java – how to initialize a servlet when the server starts
I wrote a simple servlet with init () and doget (), dopost () methods I have a request, I have an API, I need to call …… -
Java, httpurlconnection, and set the content length
I am setting the length of the content in my httpurlconnection for put urlConnection.setRequestProperty("Content-Lengt…… -
Convert the conversion date in Java to an integer and then to Delphi time
I have a server device configuration. I need to use UDP to change the equipment date configuration The server is writt…… -
Simple java XML to POJO mapping / binding?
I tried to find the easiest way to map an XML file to a simple old Java object Note: in my example, the XML does not m…… -
Javafx-2 – JavaFX: when the scene is initially loaded from fxml, a new node is added to the scene in the Java code
When a scene is initially loaded from F XML, how do I add a new node to the scene in Java code? Parent root = FXMLLoad…… -
Java – how to get the size of the visible part of a JScrollPane based window
This JScrollPane - based window is the top - level part of jsplitpane Getbounds(), getwidth(), getheight() return the …… -
Java – how to define the OSGi bundle startup level?
How to define the OSGi package startup level? I am using Apache Felix and want to maintain the starting level through …… -
Java – why does getcanonicalpath throw a checked exception while getabsolutepath does not?
I read some relevant texts to understand the difference between the two But I wonder why getcanonicalpath () throws a …… -
Java – inject mock @ service for spring unit test
I'm testing a class that uses @ Autowired injection service: public class RuleIdValidator implements ConstraintValidat…… -
Java – get a file from a remote mercurial repository
Is there a way to programmatically download a single file from a Java Remote mercurial repository? I asked a very simi…… -
Java – converts MIDI counts to names and octaves
Does anyone know anything in the Java world that maps MIDI note numbers to specific note names and octaves For example…… -
Java – multi level static nested classes produce incorrect output
When you run the following code, "x.q" instead of "a" will be printed as required by the language specification Soluti…… -
Do you need a defensive copy of Java enumeration types?
People should return so - called "defensive copies" of private reference types This is to avoid returning references t…… -
Java – play 2.5 3: Use dependency injection to get configuration values
I tried to migrate a play framework application from 2.4 to 2.5 3, and I have questions from application Conf file get…… -
Java – how to serialize classes?
When I insert the list into mongodb, there is a problem: Exception in thread "main" java.lang.IllegalArgumentException…… -
Commercial Java analyzers have an advantage over free ones The one in NetBeans?
Occasionally, I have to do some analysis of Java code. What I want to know is why my boss will investigate in business…… -
How to convert floating point numbers to 4 bytes in Java?
I haven't been able to convert such things: byte[] b = new byte[] { 12,24,19,17}; Become something like this: float my…… -
Java – httpurlconnection conn.getrequestproperty returns null
I'm trying to push some data to the URL of BES (mds_cs) @ h_ 502_ 2 @ when I set some request headers in my code and s…… -
Java – jtextarea auto wrap resize
So, I'm at JPanel (@ r_104_ 2419@Layout ）Jtextarea. On I also have @ R_ 104_ 2419 @ the stuffer fills the rest of the……