Recent Posts
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Java – pause the timer and continue
Please refer to the code posted by @ Yuri here How to stop a timer after certain number of times. If I want to stop it…… -
JavaFX – how to create screenshots of snapshot / (invisible) WebView
I want to create a snapshot / screenshot / image in WebView in JavaFX (8) This WebView does not need to be visible (in…… -
Java – modify the final value compiled by JIT
I noticed a very strange thing. After changing the last field through reflection, the method to return the field has a…… -
Java – use joda datetime as the Jersey parameter?
I want to use joda's datetime query parameter in Jersey, but it's not out of the box in Jersey I assume that implement…… -
Different results in Java and C are used in recursion=
The following very simple java code has strange output, but the same logic code in C and C has the correct output I tr…… -
JavaFX application error: no resource specified
I'm new to JavaFX and I'm trying to run a simple application Its UI is created by JavaFX scene builder, and the main c…… -
Map API for Java Swing
I want to visualize geographic maps in the swing application I found only the swingx map API Do you know any other ope…… -
Java – whether the EJB container resides in all application servers EJB container drill down
I'm new to EJB From all reading and searching from now on, I have learned the following: EJBs are beans that write and…… -
Java – slf4j error: class loader has different types of class objects
Try to find out why I received the following error in the Tomcat log: Caused by: java.lang.LinkageError: loader constr…… -
Java – fast double string conversion with given precision
I need to convert double to string with the given precision String. Format ("%. 3F", value) (or decimalformat) execute…… -
Creating a console in Java
When I try to use Java lang.System. Console(), I get a null pointer I can still write and read from it, but this only …… -
How to convert itextpdf documents to byte arrays
I need to convert the itextpdf document file into byte [] I have tested that I did not create PDF correctly The proble…… -
Creating a console in Java
When I try to use Java lang.System. Console(), I get a null pointer I can still write and read from it, but this only …… -
Java – fast double string conversion with given precision
I need to convert double to string with the given precision String. Format ("%. 3F", value) (or decimalformat) execute…… -
Java – cortlin: why can’t I do a task in the loop guard?
Why is this syntax invalid? The error reported by IntelliJ is that only expressions are allowed in such a context (lin…… -
Java – subtract 1 hour to datetime using joda time
I just want to subtract 1 hour from datetime. I try to find it on Google. I find a method called minus, which requires…… -
Why Java net. Sockssocketimpl is the default Java net. Socket implementation?
The question is simple Why does a socks aware socket implementation implement Abstract Java net. The default choice of…… -
Detailed explanation of interface and abstract class usage examples in Java
This article describes the usage of interfaces and abstract classes in Java. Share with you for your reference, as fol…… -
The difference between serializable and Parcelable of intent transfer objects
Intent is widely used to transfer object data in different components. As we all know, there are two methods to transf…… -
Java operation ant compresses and decompresses files and packages anroid applications in batches
Zip / tar compression and decompression Java actually supports zip and other compression formats, but why do you use a…… -
Sort out the basic descriptors and operators commonly used in Java programming
Descriptors are keywords you add to those definitions to change their meaning. The Java language has many descriptors,…… -
Conversion method between char array (character array) and string type in Java
This article describes the conversion method between char array (character array) and string type in Java. Share with …… -
Explain the commit and rollback of transactions in Java’s JDBC API in detail
If the JDBC connection is in auto commit mode and it is in default, each SQL statement is submitted to the database wh…… -
Java implementation of string matching (based on regular)
There is a string. How to query whether there are y and f characters in it? The darkest way is: Program 1: I know if, …… -
Extensible spring custom configuration schema (2)
Namespace support To implement namespace support, you need to inherit from namespacehandlersupport. Add configuration …… -
Three ways to upload files asynchronously in Java
This article shares three Java asynchronous file upload methods for your reference. The specific contents are as follo…… -
Four ways of exporting excel with Java finereport report report tool
In practical applications, it is often necessary to export data into excel. In addition to exporting as is, there are …… -
Two methods of constructing and parsing JSON data using Java (detailed explanation 2)
JSON (JavaScript object notation) is a lightweight data exchange format. It adopts a text format completely independen…… -
Java development framework spring implements custom cache tags
Since spring 3 After 1, spring introduced Abstract caching, which can cache the data returned by the method by adding …… -
Tutorial on using Jackson to realize the mutual conversion between Java objects and JSON
1、 There is an objectmapper class in Jackson, which is very practical for the exchange of Java objects and JSON. 1. J…… -
Summary of java interface and abstract class usage examples
This article describes the usage of Java interfaces and abstract classes. Share with you for your reference, as follow……