包含标签：Java 的文章
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Java string hashcode caching mechanism
Looking at the Java string class, we can see that the hash code is cached after the first evaluation public int hashCo…… -
Why does Java imageio smooth JPEG colors
When I see some JPG files, the color becomes flat This is a simple example. It reads a JPG and writes the same image t…… -
Why does Java allow method void with class name and type
There is already an answer to this question: > methods with same name as constructor – why? 7 Example code: //my cl…… -
GWT and JPA
I'm using GWT 1.5 3. Build database application I use JPA annotations with my objects It seems that the RPC of GWT wor…… -
Java bufferedimage, write to the underlying grid, and the pixels are offset in the final image
Sorry for the thread dead software, I tried to generate a test version, which can be found here https://www.dropbox.co…… -
Java – how to effectively use the leaderelection recipe for curators using zookeeper?
I am using the Apache cursor library to conduct leadership elections on zookeeper My application code is deployed in v…… -
Java: how to deal with a lot of fields and their encapsulation?
Suppose my task is to code a role - playing game This means, for example, I want to track a character in a role game a…… -
Java – is there a portable way to have “select first 10 * from t” semantics?
I want to read the data in 10K record blocks from the database I found result limits on Wikipedia. It seems obvious th…… -
Java – references the spring properties file using a path relative to the configuration file
I am moving properties from my spring configuration file to a separate properties file This is included in the configu…… -
Java – converts a string to a header case in JSTL
Is there any way to use JSTL tags to convert strings into header cases? Thank you in advance Solution An alternative t…… -
Java – use ‘valueof’ to retrieve an enumerated throws runtimeException – what is used?
I have the following enumeration enum Animal implements Mammal { CAT,DOG; public static Mammal findMammal(final…… -
Java – references the spring properties file using a path relative to the configuration file
I am moving properties from my spring configuration file to a separate properties file This is included in the configu…… -
java. net. Local file protocol for URL
What is the protocol for local files that use URLs? I have downloaded a file using Java, and I need to know how to acc…… -
Java – write string to CSV file
I tried to write data to a CSV file using Java, but when I tried to open the generated file with Excel, I received an …… -
Java – why are nested blocking annotations generally not allowed?
In most languages I use, you can't nest annotations at all, because "closing" comments. The first occurrence of sintax…… -
Java – Lucene is not a null query?
How do we construct a query to search for specific fields that are not empty field_ Name: * not working I tried field_…… -
java – ClassNotFoundException：org. hibernate. service. jndi. JndiException
I get the following stack trace java.lang.ClassNotFoundException: org.hibernate.service.jndi.JndiException java.ne…… -
To interleave or interlace two vectors
I want to interleave two vectors of the same pattern and equal length Say: a <- rpois(lambda=3,n=5e5) b <- rpois…… -
jsf – java. lang.NoClassDefFoundError：javax / servlet / jsp / jstl / core / Config
I am using JavaScript and JSF to develop an application for FB login website I have released my code here The problem …… -
Java full screen on Linux – how do I overwrite the taskbar?
I read some related articles and googled a lot I have a problem running Java applications in full screen mode of "open…… -
Java – Flink streaming: how to output a data stream to different outputs according to data?
In Apache Flink, I have a string of tuples Let's assume a very simple tuple1 < string > Tuples can have any valu…… -
Java – method for generating generic types using ASM bytecode generator (classwriter)
Defining simple getters and setters is easy to use ASM (fortunately, even in their FAQs) But there's one thing I didn'…… -
Java – how to use GWT when downloading files using servlet?
I'm creating a simple project that allows me to upload and download files using GWT I can't download files from my ser…… -
Pinball game code based on Java Swing
This paper describes the pinball game code based on swing in Java. Share with you for your reference. The main functio…… -
Example of using JDBC to access SQL Server 2008 database in JSP
Direct access to the database by jdbc driver advantages: 100% Java, fast and cross platform disadvantages: you need to…… -
Use cases of drop-down menu, pop-up menu and jtabbedpane components in Java Swing
Menu is the most commonly used component in GUI. It is not a subclass of component class and cannot be placed in ordin…… -
Java uses circular linked list structure to solve Joseph problem
This paper describes the method of solving Joseph problem with circular linked list structure in Java. Share with you …… -
Spring MVC framework construction and configuration method and detailed explanation
Now the mainstream web MVC framework is spring MVC in addition to struts. Therefore, this is also the mainstream frame…… -
Use instances of table (JTable) and tree (JTree) components in Java Swing
1： Table (JTable): 1. Basic concepts: Table (JTable) is a new component of swing, which is mainly used to display dat…… -
Detailed explanation of transaction management examples in spring
This article describes the transaction management in spring as an example. Share with you for your reference. The spec…… -
Method of cleaning DNS cache with Java
This article describes the method of cleaning DNS cache with Java. Share with you for your reference. The specific ana…… -
Decorator Pattern details and code examples of Java design patterns
Decorator mode can dynamically add capabilities to existing objects. Next, I will use a simple example to demonstrate ……