Java
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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…… -
Java – learn about mappedby annotation in Hibernate
I try to understand the mappedby attribute of @ onetomany annotation in JPA I created the following example where the …… -
Java ee6 > packages JSF facelets (XHTML) and managedbeans into jars
Can JSF facelets and managedbeans be packaged into jar files? So can we use this code and UI combination in different …… -
Java – how to disable info logging in HBase client applications?
I'm writing a Java console application to access HBase, and I can't figure out how to get rid of all annoying info mes…… -
Java – how to make JButton have simple flat style?
The easiest way to make JButton display only the background color? I don't need any other effects, such as border, 3D …… -
Java – unreachable statement: while true vs if true
There is already an answer to this question: > unreachable statement error using while loop in Java 2 while (true) …… -
Java – how to use UUID and Hibernate as fields?
I try to use the generated UUID without @ ID annotation because my primary key is something else Applications don't ge…… -
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 …… -
Composition of basic Java tutorials
We have tried to define classes. To define a class is to create a new type. With classes, we then construct objects of…… -
Analyze the differences between abstract classes and interfaces in Java in detail
In the Java language, abstract class and interface are two mechanisms that support abstract class definition. It is pr…… -
Shell script realizes automatic installation of JDK in Linux system
A: The machine on which this script runs, Linux B: the machine on which the JDK is to be installed, Linux First, on ma…… -
Basic Java Tutorial: Hello world to object oriented
Java is a completely object-oriented language. Java realizes the concept of "cross platform" through the running mecha…… -
Java functional programming (8): string and method reference
Chapter 3 string, comparator and filter Some methods introduced by JDK are very helpful for writing functional code. W……