Java
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Java – Orient DB slow write
The official website of orientdb says: However, executing the following code can show that it takes 17000ms to insert …… -
Java – @ bean is different from @ Autowired
Why can't I use @ Autowired in this case @SpringBootApplication public class Application { @Autowired Booking…… -
Java – how to integrate BeanShell
I am developing a Java based component game engine. Now when I make changes to the component to be rebuilt and restart…… -
Java – how to receive the content sent by convertandsend?
I am reading the Spring Framework Reference chapter on JMS integration There are some examples of sending text message…… -
Java – eclipse – TestNG refers to the nonexistent project XXX and starts the configuration
When I try to run a test as a TestNG suite, I get a very cryptic error message indicating that TestNG cannot start bec…… -
Java – a graphical tool like hpjmeter to view the – agentlib: hprof analysis output
What tools are available to view the output of the built-in JVM Analyzer? For example, I am starting my JVM: -agentlib…… -
Java – how to name a variable for a copy of a parameter?
I have a method to handle the collection < nodes > passed in as a parameter This collection will be modified, so…… -
Make small changes to the Java protocol buffer object
I want to make a small change to go deep into the tree of Java protocol buffer objects I can use it Getbuilder () meth…… -
Java – why is datafetcher not called in this graphql setting?
I want to write a piece of code that will handle graphql queries like this: query { group(id: "com.graphql-java"…… -
Java – set ehcache replication – what multicast settings are required?
I am trying to set up ehcache replication as follows: http://ehcache.sourceforge.net/EhcacheUserGuide.html#id.s22.2 Se…… -
Java – how does caching work in jax-rs?
Suppose I use the @ get method to make the following web service calls: @GET @Path(value = "/user/{id}") @Produces(Med…… -
Java – how to use hibernate Properties file instead of hibernate cfg. xml
I'm trying to connect to a DB in a servlet using hibernate I have read that we can use hibernate cfg. XML or hibernate…… -
Java – randomly “walk” near the center of a limited area
I don't know if I can correctly express this problem, but here I want to write an example where the dots have a speed …… -
Java – stop JPopupMenu stealing focus
I have a jtextfield, and I want to suggest that the results match the user's input I show these suggestions in JList i…… -
Why can’t Java tell me when I can’t use integers?
For a small project (question 10 Euler), I try to sum up all primes less than 2 million So I use a powerful method to …… -
How to use BigInteger class to implement an unsigned 64 bit int in Java?
I'm looking for a data type with an exact capacity of 0 to 2 ^ 64 – 1 We know that Java does not support 'unsigned' re…… -
Java – JNDI lookup of EJB3 in ear file on GlassFish
I have an ear file containing a large number of jars, one of which contains local session beans (EJB3) I need to perfo…… -
java – org. apache. jasper. Jasperexception: function tests must be used with prefixes when no default namespace is specified
I am using the following for my project: @Component @Scope(value = "singleton") public class TestBean { public voi…… -
Force java to release all file locks / handles in Java
My java application (which is quite a lot of code) performs a lot of file operations In my application, I need to move…… -
Java – why does my swingworker thread continue to run until execution is complete?
I am implementing the GUI for the console application, and I need to perform some operations (for example, parsing XML…… -
Java – keytool – genkey error: keystore file does not exist
I try to create a new self certified keystore file The commands I use are: keytool -genkey -selfcert -dname "cn=My Nam…… -
Java – use org. Org JSON parsing JSON
I tried to parse the output of a server, which looks like this: { "GetFolderFilesByZoneResult": [ { "ID": …… -
Java – how to make the future the object of the future?
Env: akka 2.1, Scala version 2.10 M6,JDK 1.7,u5 Now it's my question: I have: future1 = Futures.future(new Callable<…… -
Java – how to simulate injected dependencies
I want to use Guice in the JUnit test class below to inject simulation dependencies, especially resources How can I do…… -
Java HTTP proxy server
I need to implement an HTTP proxy server application that will proxy requests from multiple clients to remote servers …… -
How to determine whether the obtained Java resultset is empty?
Class.forName("org.sqlite.JDBC"); Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection(…… -
Java – use scl010 to obtain the uid of Mifare Ultralight
I want to get the uid of Mifare ultralight NFC tag TerminalFactory factory = TerminalFactory.getDefault(); List<Car…… -
Java – how to use libgdx to move sprites using keyboard keys?
I've just started using Java and libgdx, and I have this code. It's very simple. It will print a sprite on the screen …… -
Java – is there any way to play in app products from the back-end server using Google?
Consuming Google play in app goods can be easily from client applications（ http://developer.android.com/google/play/b…… -
Exception in thread “main” Java util. Missingformatargumentexception: format specifier ’10s’
There is no doubt that I will miss something very obvious here, but I can't understand it Any help would be appreciate…… -
Java – eclipse can have multiple output folders like multiple source folders
I have an eclipse project that has two source folders – 'SRC' and 'test' I want to build from these two folders into a…… -
Java – libgdx and scrollpane with multiple widgets
Trying to add multiple items to the scroll bar, I soon found that all "addactor" functions were not supported So, I ad……