Java
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Java – spring data JPA cannot be configured: the specified class is an interface
I have started using spring data JPA Unfortunately, I can't configure it I have entity class and repository interface,…… -
How to create a string representing Java as if it were an unsigned 64 bit value
My component was passed a long value, which I later used as a key in the cache The key itself is a string representati…… -
The Java iterator gets the next one without incrementing
I write the following loop in Java for each loop that I want to access the current and next elements of the link list …… -
How to cut the Java of each loop in half?
I'm working a lot for each loop in Java I'm using them to "draw" every class of my object, but it requires a lot of me…… -
Java – how to invert large arrays?
OK, so I know it's very easy to reverse the array by swapping items until you reach the middle like this: int array[SI…… -
Java-8 – three possible Java 8 optional values – how do you cleanly return any existing?
See English answers > teaching options in Java 8 5 return optionalA.orElseIfPresent(optionalB).orElseIfPresent(opti…… -
Avoid using global variables in Java 8 stream reduce methods
I'm trying to use Java 8 to rewrite the implementation of Moore's voting algorithm to find the major elements in the a…… -
Java – does the playframework return absolute URLs in HTTP instead of HTTPS?
I'm using only HTTPS in nginx play! A project is implemented in the framework Everything is normal, SSL is recognized,…… -
Java compensate 0.05 for money
I have 7.125 (double) and need to make it 7.15 What is the easiest way? Found round, but I got 7.13, please help thank…… -
Java – create a unique random number
I created the following method to create a unique random number (this unique value belongs to the node of the tree): s…… -
Java – connect two calls through a web application
I need to add a feature to my java based web application that allows users to click on links, and the application will…… -
Java – how do I step through the program in eclipse?
I want to follow a java program so that I can understand how everything works together I can do this with visual studi…… -
Java – is there a real-world project using clojure that uses multi-core systems that I can see?
Is there a real-world project using clojure that takes advantage of the multi-core system I can see? I think if clojur…… -
Java – MySQL timeout – should I set autoreconnect = true in the spring application?
After a period of inactivity on my website (using spring 2.5 and MySQL), I received the following error: org. springfr…… -
Java – the problem of converting integer to string
I want to add two numbers from the EditText field So far, I have the following code that I believe converts the EditTe…… -
Java – Eclipse INI file; Parameters, meaning and best practice values
I want to fine tune my eclipse INI file to best adapt to my system and development environment http://wiki.eclipse.org…… -
Java – let selenium pass Htaccess popup login
I use webdriver (selenium 2) and Java on Linux I am using webdriver to automatically fill out the form and submit it I…… -
Java – eclipse link, JPA, Oracle, Weblogic, calling persist do not commit the database
I'm just starting to look at Java persistence (currently using eclipse's eclipse link default provider) Basically just…… -
java – Ping vs HTTP HEAD
I am writing a Java application that has the ability to check whether it is connected to the Internet by periodically …… -
Java definition: tag, token
I wrote this: (fitness>g.fitness) ? return 1 : return -1; And received the following error: Syntax error on token, …… -
Java – returns a null class forName
I read an article about class Whether forname can return null here posts, everyone seems to think it can't (or won't) …… -
Shift operator in Java program output
I encountered the following program, which behaved unexpectedly public class ShiftProgram { public static void m…… -
Can I load one of two different classes in java with the same name?
I have a lot of code to call static methods on foo, such as "foo. Method()" I have two different foo implementations a…… -
Java – cannot interpret NullPointerException
In the following code, I have a method to get the vector of people with the same constellation Persoane is vector <…… -
Java – how do I get a spring transaction manager instance?
I use annotations to mark the methods that should be executed in a transaction However, there is one place where I nee…… -
Java – servletrequestwrapper or servletresponsewrapper in production?
Have you seen anything useful to extend httpservletresponsewrapper / httpservletrequestwrapper or servletrequestwrappe…… -
Advantages and disadvantages of organizing packages in Java projects
As the project I'm working on gets bigger and bigger, I'm beginning to be very uncertain about subcontracting classes …… -
How to read text files into jtextarea in Java Swing
This is my code: try { String textLine; FileReader fr = new FileReader("ad.txt"); BufferedReader reader = …… -
Java – update jpprogressbar without knowing progress
I want to use JP progress bar, but I don't have any progress measurement about how long it takes to complete the task …… -
Java – incorrect package names are allowed in eclipse
Some classes in my current project have bad package declarations (they are in the wrong folder of the declared package…… -
Java – why can a generic list be cast to its type parameter
Why does the following code compile? What's the meaning of this? //Connection can be substituted by any interface List…… -
Java – selenium’s eclipse lacks source code
Please refer to the attached screenshot When I hover over the following code: selenium.waitForPageToLoad("30000"); I r……