Recent Posts
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Java – JPA inheritance is not dry
I have inherited the job, but it's not very dry I have to repeat the coding for each new bolt type It's best to show m…… -
Java – what is the purpose of using reflection to modify strings?
I'm reading article, which says that Java strings are not completely immutable However, in the article's sample code f…… -
Java – when my application is in portrait, use the camera in landscape
I have tried various ways to achieve the behavior I want, but there seems to be no work My application is locked in po…… -
Java Collections API Bug？
I stumbled upon collections An error in the Java collections API in Java The following is the code in the JDK source c…… -
The Java chrome selenium CI test was suspended randomly for 3 hours
Our CI Java chrome selenium test hangs randomly for 3 hours before socket timeout We get an error: 2015-08-31 10:18:47…… -
Block / disable JavaFX 2 WebView right click
I am looking for a way to prevent / disable JavaFX scene. web. Right click in WebView More specifically, I don't want …… -
Java – read the image from excel and store it in SQL server
I have a table called 'tab1' cl_id int //auto imcrement cl_image image I want to read the image in Excel from the imag…… -
What’s the point of putting parameters before parameters in Java / Android?
What is the difference or meaning of placing the $symbol before any variable or parameter? for example Suppose this is…… -
Why does the java compiler complain that local variables are not initialized here?
int a = 1,b; int a = 1,b; if(a > 0) b = 1; if(a <= 0) b = 2; System.out.println(b); If I run this, I receive: Ex…… -
Java – upload running files in PHP
I know it sounds strange There is a PHP file on my server, which is responsible for processing the upload The Java pro…… -
Java – buildfinished and buildstarted will not work properly
I'm from org apache. tools. ant. Defaultlogger of defaultlogger creates a subclass: public class ExtendedLogger extend…… -
Java: find out what uses all memory
I have an out of memory Java application, but I don't know which code is allocating memory Is there an app I can view?…… -
Thread job in Java
I want to generate 200 threads in Java at the same time What I'm doing now is entering the loop and creating 200 threa…… -
Java – Android music player in UI thread or background
I'm trying to create a simple Android application to play audio files in SD card >By default, the service runs on t…… -
Java finds a specific letter for the first time
I am developing a program in Java I need to find specific text in the string Suppose the string is' hawaiie ' I need t…… -
Java – use the long string in JSON (> 1 show) of Jackson token stream
I'm trying to write some code to process JSON documents, which contain extremely long string values (more than 1 billi…… -
What language can replace Java?
I may release a premature question. Maybe I'm just scared for no reason, but the way Oracle handles Java is not very p…… -
Which collection is used in Java?
I want to map integers to strings. They are one-to-one, for example: 60 : c 61 : c# 62 : d 63 : d# 64 : e 65 : f 66 : …… -
Java – disable spring security authentication in specific methods
I use spring security 4.0 on my application I have a registration page in my application and I want to exclude this pa…… -
Java – the entity manager does not answer until the Native Query call is completed
I used hibernate and Oracle SQL in the project When I call the createnativequery method of the entity manager, the ent…… -
Java – recursive code that runs slowly on the UNIX box but fast on windows
I have a java code, which is a combination of while loop and recursion The problem we face is that for the UNIX box [H…… -
Java – images that need to select code from the camera and Gallery – applies to all Android phones
private void selectImage() { private void selectImage() { final CharSequence[] items = { "Take Photo","Choose fro…… -
Inline comments in Java: / * * versus / *?
Why do I prefer to write inline comments in Java, as shown below: /** Init operation */ mindControlLaser.engage(); Ins…… -
java – Android gms：play-services：8.1. 0 DexIndexOverflowException
After I changed GMS: play services: 7.5 0 to 8.1 After 0, the gradle build fails with multiple DEX exceptions The erro…… -
Java – prime factorization of large numbers
I want to find the prime factorization of large numbers less than 10 ^ 12 public static List<Long> primeFactors(…… -
What non free tools do java developers like
Most of the developers I interact with are using eclipse (I prefer NetBeans) and will take advantage of many free plug…… -
Java code creates HTML files and dynamically adds lines
I want to create a log in Java HTML file, where I will dump the error to the HTML table row when the error is captured…… -
Java – bounded wildcard of static factory pattern of return type
I read in effective Java that you shouldn't use bounded wildcards as return types, but I don't know what I should do T…… -
Java – add JPA to the right
NewRequest. java @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Basic(optional = false) @Column(nullable = f…… -
How to display two list item results as one to obtain multiple results Using Java in selenium webdriver
Here, you need to combine the two list data to print the two list results in a specific format For example, as shown i…… -
Java – error: “qualifier must be an expression” – Android studio
Activities: public class PreviewsFragment extends Fragment { private ViewPager mPager; @Override public View onCreat…… -
Java – update database in JSP
I wrote this java code for my JSP page to update the user's current login details The code does not show any errors or……