Java
-
-
What is the best way to split an array in Java into smaller arrays?
What is the best way to split an array in a Java method into smaller arrays? I want to be able to put arrays of any si…… -
The collection object cannot display the output of some undefined values in Java, ArrayList and collection
When I try to print a collection object, it prints employee @ 122392iie92 Why print this instead of the details of the…… -
java. sql. Sqlexception: user ‘admin’ login failed
Disclaimer: I have never used SQL server before I'm trying to connect to SQL Server Express using java code public cla…… -
Java – using interfaces on the service layer
In our project architecture, we use the classic MVC pattern, including the classic service layer (open transaction and…… -
Java generalized linear model library
I'm trying to port some R code to Java / Scala and need an equivalent GLM function Is there any Java / Scala library t…… -
Java – why system Nanotime() is incorrect at the beginning of the iteration?
I noticed system The mode of nanotime() Whenever I start an iteration, nanotime () becomes very incorrect in a few lap…… -
Java – reload via array
So suppose I have an array of length 5 (let's call it myArray [5]) If I add 4 to myArray [3], such as myArray [3, 4], …… -
Java string finder – how do I switch case sensitivity?
I have a method to search the file for the string you give it and return a count But I have a case sensitivity problem…… -
Java – replace duplicate substrings in string
I work in Java and I want to take the following string: String sample = "This is a sample string for replacement strin…… -
Java – NullPointerException in Avro reflectdatumwriter
I have a specific problem with Avro serialization of Java objects I have POJOs generated from the XSD schema, and then…… -
Multithreading – do I have to signal an anonymous thread if the main thread completes?
Is it necessary to explicitly stop all threads prior to exiting a Win32 Application? 5 procedure TForm1.FormCreate(Sen…… -
Java – why does 10 > > 2 5 > > 2 evaluate to zero?
Consider the following codes: int a=10,b=5; int c=a>>2+b>>2; System.out.println(c); At run time, the (surp…… -
Volatile in double check locking in Java
See English answers > why is volatile used in double checked locking class Foo { private volatile Bar _barInsta…… -
Java – in POM The Proguard configuration file is included in the XML
I tried to confuse Java class files I've used ant before, so I've built it through 'build XML 'contains the following …… -
Java – where data is stored in the kubernetes cluster
How do I write / read data controlled by the replication controller and "hide" behind the service in kubernetes? If I …… -
Java – should I leave behind methods I don’t use in class?
I have a class (> 400000 instances) that is heavily used in programs with heavy performance Will leaving these meth…… -
Java – the value of the nonvolatile variable during wait() and the notifyall() call in both threads
Suppose I have two threads a and B, and I have synchronization blocks in both threads, in which an int variable is con…… -
Java – count (*) (asterisk) on querydsl / MySQL?
The initial function is MySQL query, which lists all providers of all tags: SELECT * FROM provider INNER JOIN provid…… -
Java – why does shadow affect ‘final’ behavior?
Here are three sscces. I think they should be compiled and behave the same The only thing I want to change is the firs…… -
Cannot find the type: Java Lang. Long’s verifier Post ID
What's wrong with my plan? I received an error HTTP Status 500 - Request processing Failed; nested exception is javax.…… -
Java – Braintree does not update the user’s preferred / default payment method
When a customer wants to select his payment method when creating a sales order, I see that it has changed in dropinui …… -
Java – stringreader from string Error given in split output
An exception occurred while using stringreader When creating an object, the string I parse is through string Split gen…… -
When should I use POJOs (not EJBs) in Java EE applications?
I am currently learning Java EE I use Oracle Java EE 7 tutorial According to section 34.1.1 of this tutorial In Sectio…… -
Java – missing datasource explorer in eclipse Kepler
I recently downloaded eclipse Kepler Datasource Explorer is missing in this version of Kepler Datasource Explorer can …… -
Java – spring MVC, excel file download, file destruction
I handle excel export function in one of my webapps I set up a small test case and made the download work, but the xls…… -
Creating dirty methods for threads in Java
I recently started to delve into multithreading in Java In the process of exploring things, I found that there are two…… -
Java – list iteration – General Logic
I have a bean list (list < aclass >), from which I create two sub lists based on some logic, including checking …… -
Java – use TreeSet for sorting without providing comparator
I know that TreeSet in Java will automatically sort its elements in ascending order to ensure the order For example, i…… -
Java – extract the first letter from each word in the sentence
I have developed a voice to text program where users can say a short sentence and insert it into a text box How do I e…… -
Java – thread safe enum singleton
Enumeration helps create singles I know enumeration methods are not thread safe, so I try to make them thread safe Any…… -
Java – learn rest and get stuck on the IllegalStateException
I'm trying to learn from rest. I'm trying to make a simple test project to act as a smoke test I did four classes @App……