Recent Posts
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Java – type iterator The next () method returns to the character class
I tried to display the contents of the following HashMap: HashMap<Character,Integer> hm = new HashMap<Charact…… -
JavaFX: null tableview message
I am developing a java project using eclipse, JavaFX and tableview My application has three languages to choose from. …… -
How does this java code instantiate an abstract class?
I'm changing our Java class, and I notice the following line of code: OurClass<OurInterface1> ourClass = new Our…… -
Implement within the interface – Java
We know that we cannot implement functions in interfaces in Java I just tried public interface InvoiceService { publi…… -
Evaluation order of sub expressions in Java expressions
I have the following code snippets: int x=2,y=3; if ( (y == x++) | (x < ++y) ) // rest of code I know that in C you…… -
Java – flyway 3.1 migration checksum mismatch The calculation of the checksum depends on the platform
I have exactly the same project source and SQL script on windows and Ubuntu clients and development platforms Cause: o…… -
Java – is webdriver a class or an interface?
Starting with selenium docs, webdriver is an interface, but in eclipse, org openqa. Selenium packages are displayed in…… -
RX Java – cancel observable in rxjava
I have an observable object that is performing a download However, when I click the button, I want to cancel the obser…… -
Java heap memory usage fluctuates
Dear developer, I encountered heap memory usage problems in Java applications The application itself only accepts sock…… -
Let the presentation layer (JSF) handle business exceptions from the service layer (EJB)
Update the EJB method of the provided entity (using CMT): @Override @SuppressWarnings("unchecked") public boolean upda…… -
Aurelia navigation bar virtual machine does not work
I set up nav bar according to the example in the Aurelia tutorial HTML and nav bar js. Later, I wanted to work at nav …… -
Java – upload files using HTTP handler
I'm trying to upload files (Multi - part form data) using HTTP handler WebKit boundary is writing to the target file, …… -
Java – illegalargumentexception when trying to import xlsx data into R
When importing the xlsx file into R, I faced the following errors – mydata <- read.xlsx("C:\\Users\\aniruddha\\Down…… -
Java – pass the inline constructed class to the method as a class parameter
I need to call the following method void foo(Class<? extends Bar> cls); For the CLS parameter, I need to pass a …… -
Trying to get data from a web service in Java
[ [ { "title": "ginger","id": "38","product_id": "17","product_logo": "imagePath/Desert_0.jpg?itok=Uvm6nxp…… -
Java – compute Big-O complexity
I'll eventually give the program an input file similar to 60000 400 pixel images, so I'll try to think about how the c…… -
Java – can this loop code be simplified in some way?
I have a problem... Basically my code is ugly and I don't like it I wonder if there is a way to simplify it (I use Jav…… -
Java – how to determine whether the JRE is 32 / 64 bit from the folder structure / file
I have a JRE folder on windows Is there any way to determine whether the JRE is 32-bit or 64 bit by looking at the int…… -
Java – try to draw a circle in libgdx
It's very basic, but I can't figure out what's wrong Basically, I want to draw a circle around an area of one of my ob…… -
Java initialization variable increment
Is it risky to initialize a global variable in increments of another global variable? Example: int a=0; int b=a++; i…… -
Use the or “|” operator on statements in Java
Suppose I have an array a [], if I want to change the value of a [i] and change it to zero, I can do it by using the t…… -
Java – how to encode stream findNth()?
And stream Similar to findfirst(), is there any way to write stream findNth()? I'm practicing Java 8. 0 by rewriting …… -
Java hashtable non constant time operation
I am currently learning the hash table in Java. I have questions about the operation and performance speed of the hash…… -
Unexpected negative number in Java
import java.util.*; import java.util.*; public class Prac9FibonacciNumbers { public static void main(String[] arg…… -
Java – Android studio – change the default code style
I'm used to writing code in this way: private String blabla() { return "bla"; } However, Android studio has adjust…… -
Java – a method that does not return a value when “return” is encountered in “if”
My problem is that this method "islargest" encounters "return true;" Time does not end Even if the condition in "else …… -
Clojure: adding indexes to map vectors
I have a vector map I want to associate an index element with each element Example: (append-index [{:name "foo"} {:nam…… -
Java – Maven surefire permgen out of space
Many methods were tried to increase the size of permgen, but there was no luck I use the following configuration in my…… -
Java – how to access LinkedList in main from my JFrame button call
:::::: update::::: I tried to update my JFrame to take LinkedList as a parameter. It looks like public userLogin(Linke…… -
java – Play Framework 2.4 Ebean
I was learning how to use ebean orm in the play framework, but I encountered an error Stockitem class: import com.avaj…… -
Are there any restrictions on log lines in Java – Travis build?
I can see our Travis CI build job until they record 10000 lines, and then the build seems to stop, no matter what stag…… -
Java – couchbase: reads all documents from the bucket
Is there any way to read all the files from the bucket? It is an active bucket, and I also want to access newly create……