Java
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Java – sets the ideal size of the thread pool
See English answers > performance issues with newfixedthreadpool vs newsinglethreadexecutior1 newSingleThreadExecut…… -
JavaFX in enterprise web applications – a good alternative to traditional web pages?
We have developed several web applications for different customers, from a simple and boring crud style GUI to a favor…… -
Reading HTML files into DOM trees using java
Is there a parser / library that can read HTML documents into DOM trees using Java? I want to use the standard DOM / X…… -
Java – where to call public static void main?
I just want to know where our main methods are called Solution It is specified in the Java language specification, 12.…… -
Java – what is the best practice when implementing equals () with entities that generate IDS?
If I have a table a, B, C, D Now, if I'm going to create a business object based on this table (for example, in Java),…… -
Java – weave yourself into a corner
We have a set of classes derived from a set of common interfaces IFoo-> BasicFoo,ReverseFoo,ForwardFoo IBar -> U…… -
Java – can I register a receiver in a test case?
I want to test whether the alarm programmed with AlarmManager is triggered in the unit test. If so, it will be trigger…… -
Java – how to call super (…) and this (…) in the case of overloaded constructors?
I never needed to do this before, but since both must be the "first line" in the constructor, what should I do with it…… -
java – Cron Job in play framework 2.0
How to schedule tasks in play framework 2.0 through cron expressions? Equivalent to @ on ("< enter cron expression …… -
Java – the usual hibernate performance trap
We have just finished configuring our application She's starting to slow down This is a legacy mapping Who works, do t…… -
Do a “memory dump” Java application?
I have Java applications that unfortunately start consuming considerable memory after a period of time To complicate t…… -
Java – where do I sort?
I have a database, I query, I don't know where to perform the sorting of results, so far, I have the following options…… -
Reflection – Java 8 – invalid constant type
I have a problem with the reflections library Dependency and in POM Build in XML <dependency> <groupI…… -
How to eliminate the gap between large Java Swing Tags
In my application, I have a label with a font size of more than 200 This label contains large up and down (irregular) …… -
Java – configure spring security to use custompasswordauthenticationfilter
I have implemented my own lowercaseusernamepasswordauthenticationfilter, which is just a subclass of usernamepassworda…… -
Java: socket read timeout exception
I tried to call a very heavy process When I execute this process, I set a ridiculously large number of timeout times: …… -
Java – the best way to avoid duplicate code if two classes extend different classes
I'm developing an Android project and I'm facing this situation I have two classes: class A extends B { openDoor(){ /…… -
Java – cannot use multiple ebean databases in play 2
We are using play framework 2.0 3 set up a slightly complex project We need to access several databases (pre-existing)…… -
Java – view the cache of headers and footers in the list view
You can add a list view to a header and footer view Cache these views? edit Consider a layout of such content (essenti…… -
Should I use playback framework or normal Java EE
I plan to launch a website that I will use commercially I've heard of the play framework recently. It looks good But I…… -
Java instantiation
>When an object is instantiated in Java, what really enters memory? I understand the usual Abstract explanation for…… -
Java – spring boot swagger custom swagger UI html
I encountered a problem migrating the war application to the spring boot jar application I am using spring boot 1.4 1 …… -
Calculate the distance between two vectors of different lengths
There are different ways to calculate the distance between two vectors of the same length: Euclid, Manhattan, Hamming …… -
Java – change the child order of SWT composite
In my case, I have two sashform children, but the problem applies to all composites class MainWindow { Sashform sa…… -
Should spring management be “everything” in Java – spring applications?
We are developing a new application and we want to use spring (University project!) When writing a new spring applicat…… -
Java execution process – Rewriting methods execute first than constructors
I have the following code in the same java file import javax.swing.SwingUtilities; import java.io.File; public class …… -
Java – where does velocity search for templates?
I need to use velocity from Java code in my web application (I use it as a mail template processor) So I have a standa…… -
Java – use bitwise and in if statements
In C, I can write an IF statement if (firstInt & 1) But when I try to perform the same operation in Java, the comp…… -
What is the meaning of the question mark in angle brackets? Extend Java lang.Comparable>
In the App Engine, according to the Javadoc, the gettyperank method has this signature: public static int getTypeRank(…… -
Java – how to print a long type value using the input size modifier?
This is basically what I want to do // ... some code,calculations,what have you ... long timeToAdd = returnTimeToAddIn…… -
Connect some in Java Txt file [closed]
I have some Txt file I want to connect them and generate a text file How will I execute in Java? file1.txt file2.txt C…… -
Why is timeunit Java util. Members of concurrent?
Java's timeunit enumeration is useful for many different tasks related to time, not just concurrency; And other time r……