包含标签：Java 的文章
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Java – advantages and disadvantages of data sorting in database?
Let's say I have a table with a varchar type table And I need to get the data in the table alphabetically from the fie…… -
Java – how to enable batch insert in Hibernate?
Using hibernate, when I try to enable batch insert <property name="jdbc.batch_size">50</property> I get th…… -
Comparison and difference between Java int and integer
Difference between Java int and integer: The difference between int and integer is the difference between the basic da…… -
It is equivalent to map (from Haskell) in Java 7
In Haskell, there is a function called map, which uses a class a list and a function f to map the value of type A to t…… -
External optimized configuration method of configuration file after spring boot jar package
Without any processing, spring boot will use the application. In the project by default Properties or application YML …… -
How to pass an object array as a parameter in Java
This method is public static void method (object [] params)). Should I call it under the following circumstances? >…… -
Linked list and bidirectional linked list in Java language
Linked list is an important data structure, which plays a very important role in program design. C language and C + + …… -
Java – garbage collection in Android (done manually)
I have a strange question I know that garbage collectors have their own limitations If assigned So my question is, is …… -
Java – what makes the execution order of threads unpredictable?
What makes the execution order of threads unpredictable? At some point, the scheduler uses random numbers or checks sy…… -
Java – Apache poi sxssf and xssf
I have a problem. I'm right. If I have a workbook created by xssf constructor, is it enough to change the constructor …… -
Lambda for JavaFX Task
The compiler provided this error for this Code: "the target type of a lambda expression must be an interface": Task<…… -
. Net – what is the current performance of mono virtual machine?
The network is full of different types of performance tests for different languages, compilers and virtual machines Ho…… -
Java – how to reverse the order of sortedsets
I want to print a sequential table in the map using the following: Map<Float,String> mylist = new HashMap<>…… -
Java jlabel, break text to the next line?
It's been a while, because I asked a question! I am developing an application using jlabels in Java In any case, as sh…… -
RxJava; How to send observable quantity synchronously
I want to issue two observable objects synchronously (they are asynchronous) and return the first issued observable ob…… -
Java – how to add query parameters to HTTP get requests through okhttp?
I am using the latest okhttp version: okhttp-2.3 0.jar How to add query parameters to get requests in okhttp in Java? …… -
How to change the image permission mode to 777 using java code?
I want to use java code to assign the permission mode value "777" to the image file How can I express it in Java? Beca…… -
java – System. Arraycopy() copy objects or reference objects?
I have a final class nameandvalue I use system Arraycopy () copies an array of nameandvalue objects. When I change the…… -
Java – general helper for closing JDBC objects
It is strongly recommended to close JDBC objects (connections, statements, result sets) when using them However, this …… -
Java – if the thread running the function is interrupted, does the finally block execute?
If I have a function with a try / finally part and the thread running it is interrupted in the try block, does the fin…… -
Is there a central Javadoc repository online?
I found some using the name com sun. jersey. spi. container. Sample code for the interface of containerrequestfilter S…… -
Java – Maven installation issues
Hi, I'm trying to use this tutorial to install Maven to my computer. I've put my environment variable Maven_ Set home …… -
When should I use Java’s stringwriter?
What is a Java stringwriter and when should it be used? I've read the documentation and looked at here, but I don't kn…… -
Java – a regular expression used to split strings separated by | when not enclosed in double quotes
I need a regular expression to calculate the number of columns in the pipeline delimited string in Java For example: "…… -
Java: files to hex
I have a java file FileInputStream in = null; try{ in = new FileInputStream("C:\\pic.bmp"); }catch{} I want to pic…… -
Java – get two different outputs from stream
I'm testing the new stream API in java-8 and want to check the results of 10000 random coinplips So far, I have: publi…… -
Java – how to change the JTable background color to white by default?
I have a JTable that I display in the JScrollPane Only JTable Anyone can tell me which method to use to turn gray into…… -
The Java EE frontcontroller is the same as the dispatcher servlet of spring
If you view the Java EE frontcontroller sequence diagram, the controller will delegate the request to the dispatcher. …… -
. Net – Convert System:: array to STD:: vector
Does anyone know that cli / Net system:: array is a simple method to convert C STD:: vector, in addition to operating …… -
Java – Tomcat configuration using DBCP
After a few seconds, we receive a communicationsexception (from DBCP) The error message (in the exception) is the end …… -
Java – selenium webdriver cannot find element through link text
I'm trying to select an element that contains an anchor, but the text is buried in a paragraph within a Div This is th…… -
Strange java time zone date conversion problem
I want to convert ms-since-1970-timestamp to a date with time zone (Germany) These are two variations of the code – at……