Recent Posts
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The performance of regular expressions in Java is compared with that of indexof
Please tell me how to match "" And period "." It is also more effective to use indexof () instead of regular expressio…… -
Binary search in the sequential table in Java
I'm looking for a way to implement code in Java, which works the same as binary search in ordered ArrayList, but for o…… -
Java classloader dilemma and locked jar
I was playing with classloaders in Java and noticed a strange thing If the classloader loads a class from a jar, even …… -
Java – cast to inner classes using generics
Consider the following codes: public class Outer<T> { public class Inner{ } public static <T&g…… -
Java – how to create a wicket URL that hides its parameters?
I am currently creating a set of links with the following code: BookmarkablePageLink<CheeseMain> havarti = n…… -
Java – how to dynamically set rowheight in JTable
I want to place a string in a JTable that is longer than the given cell width import javax.swing.*; public class Exam…… -
Image processing – how to multiply the spectra of two different dimensional images?
This is not a programming problem But I'm sure this is something widely known and understood in this community I have …… -
Java – text editor with syntax highlighting and line numbers?
This is a bit of a challenge for a team project, let alone a single person implementation, but I tried to use jeditorp…… -
Java – monitoring dbcp2 connection pools using JMX
I read from the dbcp2 documentation that this new version supports JMX monitoring of connection pools, but I can't fin…… -
Java import class system
I have a question about class import. If you import a class, you seem to be able to call a method with a reduced line …… -
JavaFX CSS error (attribute style sheet does not exist)
I've just started building JavaFX applications in IntelliJ using the latest Java 7 SDK I have built my interface using…… -
What types of encryption are available in Java?
I am implementing the data transfer model in Java I have implemented DES, 3DES and AES in my application. I would like…… -
java – JAXBElement vs boolean
What exactly is a jaxbelement Boolean value and how to set it to Boolean equivalent to "true"? method: public void set…… -
Java – wait for the third-party thread to complete
I have a thread running a third-party library, which will also run its own thread When the run method of my thread com…… -
Variable declaration in Java – if clause
if(someCondition) if(someCondition) int a=10;//Compilation Error else if(SomeOtherCondition){ int b=10;//no compilat…… -
Why is tomee Java ee6 certified but not tomee?
As the title says I know very little about the internal working principle of Java ee6 certification However, it seems …… -
An unexpected error occurred while using Lambdas in Java 8
I use Java 8 update 20 32-bit, Maven 3.2 3. Eclipse Luna build ID: 20140612-0600 32 bits After I started using Lambdas…… -
Java – andengine – cannot instantiate activity
I'm a novice in Android development. I have a problem using andengine I tried to run an empty application, but got a r…… -
I really need to define the minimum heap size for Java
I'm about to deploy the application to the real-time server, and now I'm in the part of setting the heap and permgen s…… -
Java – how to use order in HQL?
I want to execute my HQL query like this: Query queryPayment=sixSession.createQuery("from Payment where vcode=:p_Vcode…… -
Java – programmatically resolve Maven dependencies outside the plug-in – get the repository systemsession and repository system
Maybe this will be a bigger task than I thought at first, but no matter I try to load a maven project from a file and …… -
Java – restrict access to spring MVC controller – N sessions at a time
We have licensed commercial products (unimportant products in this case), which is limited by the number of concurrent…… -
How do I skip the first line of CSV in Java?
I want to skip the first line and use the second line as the title I am using the classes in Apache commons CSV to pro…… -
Java simple telnet client using socket
I have read a lot about this topic. Telnet is a protocol, not a simple socket connection, waiting for line breaks, usi…… -
Filtering lists using java 8 lambda expressions
I have a project class: class Project { List<Name> names; int year; public List<Name> getNames…… -
Help use Horner’s rules and hash functions in Java?
I'm trying to convert words to integers using Horner's rules I understand how it works. If the word is long, it may ca…… -
How to use java to calculate the number of options in the selection drop-down box in selenium webdriver?
I have a selection drop-down list: xpath //*[@id="ddlTablePay"] I need to calculate the number of options in this drop…… -
“Cannot reproduce” – is java deterministic multithreading possible?
Can this run multithreaded Java applications in a deterministic manner? I mean, always use the same thread switch in t…… -
Java – SQL prepared statement for creating tables
I want to know some methods of dynamically creating tables based on user input (SQL prepared statement) CREATE TABLE ?…… -
Java – what does the @ modelattribute annotation at the method parameter level mean?
The spring 3 reference tells us: I don't understand this magic spell because I'm sure that the alias of the model obje…… -
What is the best way to learn security in Java A-Z
I am a J2SE / Jee developer, a novice in Java security, and plan to learn more about this topic You can help me guide …… -
Java: text strings
class A { class A { String s4 = "abc"; static public void main(String[]args ) { String s1 = "abc"; ……