Java
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Java – why is this loop not infinite
See English answer > why does increasing a Java int eventually result in a negative number? 4 Why is there a one se…… -
How to rewrite the valuemapper function using java lambda
Is it possible / correct (to) or rewrite the following with lambda? Here, I provide an inline implementation for the k…… -
How to use a java interface with multiple implementation classes
public interface Foo { public interface Foo { } public class SpecificFoo implements Foo { } public interface SomeInt…… -
Run a Java application as a background process
I have made an application using java When I install it on my computer... I want it to run as a background process rat…… -
Java – traps in JDK 6
Are there any problems in JDK 6 that do not exist in previous versions? I'm interested in timestamp Some surprising ch…… -
Java – keyloak missing form parameter: Grant_ type
I ran the keycloak standalone program on my local computer I created a new realm called "spring test" and then a new c…… -
Java – custom predicate link
I'm learning java 8 I'm trying to create a custom predict link method, as shown below @FunctionalInterface public inte…… -
Verify Hijri date on Java 6 (Islamic calendar)
I want to verify the Hijri date In my application, Hijri date will appear in DD / mm / yyyy format I want to verify th…… -
Converting nested lists using java streams
Is it possible to use streams to get the same results (as I currently get using the following nested for loop)? List&l…… -
JavaFX – from list to map using java 8
Is it possible to generate hashmaps using streams and collectors? myList.stream() .map(Label::new) .collect(Collectors…… -
Java – jQuery Ajax error resolution
I'm developing a striped application that uses some jQuery to make the UI more dynamic / usable I set up an error reso…… -
Java – questions about Solr documents, etc
Website: classified advertising website (users can put advertisements, search advertisements, etc.) I plan to use Solr…… -
How should message generators identify themselves in Java?
I have a unified message object queue with multiple producers and one consumer Consumers are publishing information an…… -
Java – can I automatically update hibernate POJOs and mappings in NetBeans after adding a new table?
I already have hibernate mapping files and POJOs created by NetBeans, and I have added named queries and additional me…… -
Java OS X dock menu
Can I add items to the application dock menu? Editor: I think I miss this problem. I don't want to find a way to add a…… -
What methods can be used to return valid and invalid XML data from files in Java?
I have the following data, which should be XML: <?xml version="1.0" encoding="UTF-8"?> <Product> <i…… -
How to print this digital table to the console in Java?
A natural number n is required. I want to print to the console in this format: 1 2 1 3 2 1 …… -
Java – run runnable multiple times in completable future
I want to execute multiple threads, which will try to add to my custom list mylist at the same time, but I can't see a…… -
Java connection pool without JNDI?
I have a connection pool to access MySQL database from servlet I use JNDI to get the data source. JNDI is in my meta-i…… -
Java – returns Boolean or try catch
When a function or method contains error / invalid data, return false or throw an exception? public boolean login(Stri…… -
How to add two matrices in Java
I want to add two matrices with the same number of columns and different numbers of rows, but I want to know how to do…… -
Can the Java – checkstyle module “needbraces” use nested if / else blocks?
We are using checkstyle to enforce our style standards One of the style rules we chose to include is the needbraces mo…… -
Java: double to float type is converted to a larger value to give ‘infinity’
Suppose I have a variable of type double with some random large values: double d = 47867778678678686546746783467347634…… -
Distributed cache with expiration control in Java
The requirement is to cache a large number of (100000 to 1000000) small objects and control the expiration of a single…… -
Java – same day from this year
I need it on the same day this year Example: now it is 2019, and the variable contains the value July 15, 2022, so I n…… -
Java – how to find enumerations of class definitions?
I know that I can get public static members of a class in the following ways: obj. getClass(). getFields() But that di…… -
Java – parses user input about search criteria
I'm looking for a way to parse some user input The input should show which searches must be performed and how they mus…… -
Java – how to divide an ordered list of integers into sub lists of uniform size?
Does anyone have a good algorithm to get an ordered list of integers, that is: In a given number of ordered sublists o…… -
How to use reference methods in unaryoperator Java 8
At present, I have an unaryoperator like this UnaryOperator<Object> defaultParser = obj -> obj; I don't know …… -
Splitting strings in Java streams
I have a POJO product List<Product> list = new ArrayList<>(); list.add(new Product(1,"HP Laptop Speakers",…… -
Java – what role does each node play in the linked list?
Why do we need to create a new node p.next for this every time Next allocation null? Isn't it always empty? What is it……