Recent Posts
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Introduction to adapter pattern of Java design pattern
This paper illustrates two adapter modes, class adaptation mode and object adaptation mode, as follows: 1. Class adapt…… -
Java – converts an integer to an equivalent number of spaces
I want to know that the easiest way is to convert an integer to an equivalent number of spaces When printing a binary …… -
Java EE – run selenium test using Maven surefire plugin or Maven failsafe plugin?
I'm confused about the concept of using Maven surefire plugin or Maven failsafe plugin to run my selenium tests (not u…… -
Example of JSON data generated by Java
Online JSON code inspection, inspection, beautification and formatting tools: http://tools.jb51.net/code/json JSON onl…… -
Java – why does the number class not have methods such as add () or close ()?
So this is a question about Java design Why Java There are no add () and negate () methods in the lang. number class, …… -
Use stringescapeutils. In commons lang3 Alternative to escape javascript()
My task is to convert our code from using org apache. commons. Lang update to org apache. commons. Lang3, I found that…… -
Java implements compressed string and Java string filtering
Topic 1: input a string of lowercase letters (a ~ z) through the keyboard. Please write a string filter program. If mu…… -
Amazon elastic search – use Java SDK to interact with Amazon elastic search service
I can't find an example of how to use Amazon SDK to interact with Amazon elastic search cluster Can someone give me an…… -
Java – get the maximum key from HashMap?
I have a HashMap defined like this HashMap<String,Integer> uniqueNames = new HashMap<String,Integer>(); It…… -
JDBC connection to SQL Server database example
1. Process: 1> Register drive class: class forName() 2> Connect to database: -
Example of drag and drop function in Java Swing
Java implementation drag and drop example The drag and drop function is implemented in swing. The code is very simple …… -
Java debugging interface, Lambdas and line number
I encountered some problems updating the debugger to use Java 8 Consider the following procedures, for example: public…… -
Java – more efficient? Empty an object or create a new object?
How expensive is "new"? I mean, should I reuse the same object, or if the object is "out of range", should it be empti…… -
How to set the CPU core affinity of Java threads?
I searched previous posts on similar topics, but I couldn't find a suitable answer, so I asked this question Thank you…… -
Java – add token to Lucene tokenstream
I wrote a tokenfilter, which adds tokens to the stream Tests show that it works, but I don't fully understand why I wo…… -
Type javax servlet. ServletContext and javax servlet. ServletException cannot be resolved
I'm trying to include spring security in my web project, and I'm following this tutorial http://docs.spring.io/spring-…… -
Using java to consume restful APIs
How would you use Java or just standard packages to use restful APIs? For example: Twitter API I know there are good j…… -
Java – use annotations in hibernate to define default column values
I know there are many questions about so and network, but all the answers suggest using column definition, which is da…… -
Java – how to call restful services through Apache camel?
I am currently using the HTTP method to call some URLs that will create JIRA problems Now I want to use Apache camel. …… -
Determines the exit status in the Java close hook thread
I want to determine the exit status of the process when shutdown is pending I want a logic based on status codes (0 or…… -
The state of the derived class object is called when the Base class constructor calls the covering method in Java.
Please refer to the following java code: class Base{ Base(){ System.out.println("Base Constructor"); …… -
How do I set the encoding for Javadoc in the gradient?
I've written Java classes with the Javadoc command, which contains special characters like ä ö ü I use gradle build fi…… -
What are the advantages and disadvantages of using XML to transfer data in this Java program?
I was asked to write a GUI of an existing shell / CmdLine program written in Java. I want to create an abstraction lay…… -
Java: different double compared with double
I know that double is a wrapper class that contains even numbers Today I see another major difference: double a = 1.0;…… -
Java hibernate uses addentity to create sqlsql
I need to apply SQL queries similar to this SELECT id as id,c03 as c03,c34 as c34 FROM (SELECT id,c03…… -
Java executor: how do I stop a submitted task?
I have submitted a task using the actuator and I need it to stop after a period of time (e.g. 5 minutes) I've tried th…… -
Java – how do I get file types on Mac OS X?
I use this code to get the type of file – FileSystemView filesystem = FileSystemView.getFileSystemView(); String sFile…… -
Multithreading – upgrading threads using CLR
Using Visual Studio 2008 and boost library 1.46 1 I want to compile and link the following and / or CLR flags: #includ…… -
Java – avoid generic forms foo >
I often find myself writing generic class definitions for forms public class Foo<ActualType extends Foo<ActualTy…… -
Java – inherit JPA and Hibernate issues
I have a strange problem loading some objects I use JPA 1, hibernate core version 3.3 0.sp1 and hibernate entitymanage…… -
Java – query returns multiple result sets
I have an MSSQL database and am running the following query: select * from projects; select * from user The above quer…… -
Java – why should the value of an annotation attribute be a constant expression?
I have the following code @UIUnitTimeout(8*60*1000) // works @UIUnitTimeout(TimeUnit.MINUTES.toMillis(8)) // does not……