Recent Posts
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Java – how do I test non thread safe classes?
I'm new to threads I'm reading Java concurrency in practice I found the following examples in the book @NotThreadSafe …… -
Java – truth table array
I always insist on how to start coding The first case will be: t T. after I have completed other calculations on this …… -
Java – how to use dynamic CSS in JSP files based on param values
I have a JSP file as follows: <html> <head> <script type="text/javascript"> var type=<…… -
Java – MVC architecture for working with servlets
So, yes, that's my understanding >Servlet is just an intermediary, which is responsible for finding out the meaning…… -
Synchronous multithreading in Java
I teach myself Java. I want to know about multithreading I created the myThread class, whose job executes a loop until…… -
Java date format is mmddhhmmss
I want to add a date to the file to maintain the archive So the file name is "cgroup0307131614", but I want to add a t…… -
Java – stores floating point numbers in an Android database
I tried to store dollar amounts in the SQLite database provided by Android, but it didn't seem to work properly This e…… -
Java – primefaces P: FileDownLoad with data table
I have a data table that returns all the files in the folder, and I can download the file using the primefaces P: File…… -
Java – create domain in Amazon simpledb
I'm using Amazon simpledb and trying to create a database using the following tutorial Basically, it throws an error: …… -
Java – automatically opens the print dialog box when opening PDF using iText
I need to be able to automatically provide a print dialog when opening PDF I need JavaScript to do this. I wonder if i…… -
How do I replace {a string inside Java
Anyone can help me replace 'in the string in Java{‘ For example String str = "abc{ad}"; str = str.replace("{","("); Bu…… -
JavaMail iso-8859-1 formatting
I made an email client for my Android phone using JavaMail API If I try to get the sender's email address and the reci…… -
Java – JPA, custom query and date
I am faced with a strange problem My search includes stack overflow and JPA and custom queries. I should specify param…… -
Java – you need to help run map to reduce wordcount jobs and data stored on Amazon S3
I'm trying to run the map reduce wordcount job on a text file stored in a bucket on Amazon S3 I have set up all the ne…… -
Java – used in spring Properties without using XML configuration
I found one in the article on using java based configuration and x000 in spring Properties file The illustrations are …… -
How to add rownames without dimensions in R
> Cases <- c(4,46,98,115,88,34) > Cases <- c(4,46,98,115,88,34) > Cases [1] 4 46 98 115 88 34 &…… -
Java – the concept of page path in JSP and Servlet
What's the difference between the two? In jsp: ${pageContext.request.contextPath} How do you achieve the same result w…… -
Reply to a request through a queue using hazelcast
I wonder if I can ask for a reply: >1 hazelcast instance / member (central point) > 1 application that uses haze…… -
How do I distinguish between two pending change lists in perforce?
I have several similar pending change lists, based on the top of the code branch and the same workspace in perforce I …… -
Sort alphanumeric string Java
I have this array to store the suffixes of some URLs added by the user: [U2,U3,U1,U5,U8,U4,U7,U6] When I do this: for …… -
Get the range of values from the map in Java
Is it possible to get values that match a series of keys in a Java map Suppose I did, Map<Key,Value> //size 10,0…… -
How do I organize my java eclipse project so that users only need to import once?
How do I organize my java eclipse project so that users only need to import once? I'm developing a graphics library. I…… -
Should our Javadoc classes extend abstract classes?
Suppose I'm writing a class "mywork" that extends the abstract class "work" Now, suppose that all the methods I need i…… -
Java – use JTable to display the slow performance of streaming data
The code I referenced is proprietary and requires a multicast server, so I cannot publish sscce code snippets I unders…… -
Java – GWT error: requestfactory validationtool must be run
Every time I start my application, even if it is not executed listempty@R_444_2419 @ES (), an error "requestfactory va…… -
Java – dagger: field injection in POJO
I've never tried guide or other Di libraries, but I've tried to use the dagger from square for Android application It …… -
What is the best cycle diagram representation for Java GC
Or I might ask if the New GC is important? If so, do you need to manage links between nodes through lookup tables or u…… -
The Java array does not remain initialized
I have an array in an array and want to initialize it with each loop // class variable Tree[][] trees; // in constr…… -
What is the cause of this compilation error using java generics and reflection?
I have a generic method that should be similar to recursion, but call different instances of the method for each call …… -
Java – exception in stackoverflow error of thread “main”
I am writing a program to verify whether the password meets the corresponding requirements I've written all the code a…… -
Java – wrong data type – Generic
In the following java code: import java.util.*; public class TestGenericMethod { public static <E> void ArrayT……