包含标签：Java 的文章
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How does Java 8 maptoint (maptoint (E – > e)) improve performance?
I'm reading the book "Java 8 Lambdas". At some time, the author said, "it's a good idea to use the original profession…… -
Tail call optimization of Fibonacci function in Java
I'm studying tail call recursion and found some of the documents mentioned Sun Java does not perform tail call optimiz…… -
Java – can I use libjpeg to read JPEG with alpha channel?
There seems to be some debate about whether JPEG of alpha channel is effective I always think the correct answer is th…… -
Java – when exactly are objects available for garbage collection?
I'm competing with my application for memory problems and trying to get my head close to garbage collection If I have …… -
Java – get selected elements from listview
I use the results of the database search to modify the listview so that I can use this option to create another databa…… -
Java automatically adjusts the font size to Windows 7
In Windows 7, if you change the font size through the control panel – > appearance and personalization – > displ…… -
Java – who has a useful mnemonic to implement a comparator?
Whenever I need to perform a comparison, I get stuck when I go back to - 1, when I need to go back to - 1, and I have …… -
Java – OCR library to identify the numbers on the instrument equipment
I need OCR Library (preferably in Java), which will be able to determine the number displayed on the instrument device…… -
Java – why don’t I use @ batchsize in every lazy loaded relationship?
Hibernate's @ batchsize annotation allows batch fetching of deferred loaded entities For example If I had something li…… -
Java – unable to download from NetBeans 8.0 1 start GlassFish 4.1 in the service area
On Windows 7, I from this site https://netbeans.org/downloads/ Downloaded the "NetBeans - 8.0.1 - JavaEE - Windows. Ex…… -
How to use Java classes dynamically in clojure?
How to use Java classes stored in variables in clojure? How do I fix the following code? (def a java.lang.String) (new…… -
JavaFX – set two root nodes for TreeView
Is there a way to set two root nodes for a treeview? I found many examples if simple treeview, but no useful examples …… -
Java – list of JMX objects and attributes?
I try to implement a Nagios plug-in, which requires me to clearly know the objects and properties I want to monitor Th…… -
Java – send auto assembly tasks to spring taskexecutor
How can you have a class that implements runnable and submits it to the spring taskexecutor for automatic connection? …… -
Java – gets the generic type of the “real” class
How do I get a "real" class of a generic type? For example: public class MyClass<T> { public void method(){ …… -
The correct way to “close” the spring context in J2SE
I am currently experiencing JPA transaction manager problems in J2SE applications The latest request is not saved corr…… -
Can I extend enumeration in Java 8?
Just played and proposed a sweet way to add features to @ L_ 502_ Enumeration of 0 @ and this Some further fixes made …… -
Java – spring, @ transactional and Hibernate lazy loading
I'm using spring hibernation All my hibernatedao directly use sessionfactory I have application layer - > service l…… -
Java – Rock Paper scissors for foldable solutions
Just experienced a variant of the game: Rock Paper scissor Lizard Spock I have written java code for a traditional r-p…… -
Java – how to use firebase to query equal to (value, key)?
As a novice in firebase, I try to imitate a "where clause" request to retrieve a user's wallet in this simple use case…… -
Java – upgrade spring security oauth2
I'm trying to change the spring security oauth2 configuration from 2.0 Upgrade from 0.rc1 to 2.0 3.RELEASE. I copied t…… -
Java – how to convert a 24 bit PNG to a 3-bit PNG using Floyd Steinberg dithering?
How to use Floyd – Steinberg dithering to convert 24 bit PNG to 3-bit PNG? You should use Java awt. image. Bufferedima…… -
Java – iText: vertical alignment of pdftable cells
I tried to vertically align my avatar cell text in the middle of the cell height This is my code: PdfPCell c1 = new Pd…… -
Java – I can’t divide two numbers correctly
int percent = (score/numberOfQuestions)*100; int percent = (score/numberOfQuestions)*100; progressText.setText(score+"…… -
The purpose of static methods in Java
I'm confused about the use of static methods in Java. For example, if the main method is static, it makes sense, but w…… -
Java – double locking mode: disconnected?
Why is this pattern broken? Is it good for me? Any ideas? public static Singleton getInst() { if (instace == null)…… -
Java – find out if sqlexception is raised due to repetition
I have a java program that is not related to the database. If sqlexception is thrown due to duplicate keys, I need to …… -
Java – running JUnit tests using Maven under eclipse
I have just installed the plug-in M2e for the first time on eclipse I wrote a simple JUnit (version 4) test I can run …… -
Method of parsing excel content in Java
This article describes the method of parsing excel content by Java. Share with you for your reference. The specific im…… -
Steps of installing JDK on Linux and configuring vsftp remote connection with Tomcat
It's been a year since I started working in the company. When I was free these two days, I installed a VMware virtual …… -
Introduction to shared mode / shared meta mode (flyweight mode) of Java design pattern
Flyweight definition: avoid the overhead of a large number of small classes with the same content (such as memory cons…… -
Implementation and simple analysis of several sorting algorithms in Java
This paper describes the implementation and simple analysis of several sorting algorithms in Java. Share with you for ……