Recent Posts
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How to calculate differences in a few months using Java’s joda API
I'm writing a program that should calculate the month between two given dates and return the value to the program For …… -
Java – how do I add soap headers to the spring Jax WS client?
How do I add soap headers to the spring Jax WS client? Specifically, I have a JAXB object that I want to add to the ti…… -
Java – check whether a file is an image
I am using Jai and creating a file: PlanarImage img = JAI.create("fileload",myFilename); If the file exists, I check t…… -
Java – Tomcat configuration using DBCP
After a few seconds, we receive a communicationsexception (from DBCP) The error message (in the exception) is the end …… -
java – System. Arraycopy() copy objects or reference objects?
I have a final class nameandvalue I use system Arraycopy () copies an array of nameandvalue objects. When I change the…… -
Java – parentheses in HQL cannot be converted to SQL
This is my HQL: Query query = createQueryOnCurrentSession("DELETE Email e " + "where " + …… -
Repeat arrangement in Java (string form: 0000111222)
I have a string in the form of 00001122222 That is, consecutive numbers repeat randomly without Time Other examples ma…… -
Strictfp in Java
I have implemented some neural network libraries in Java, and there are tight double (not double) matrix operations. T…… -
JavaFX real time linechart with timeline
I tried to draw a real-time graph with a timeline, but I found that the linechart constructor only has a signature Lin…… -
Does Java IO have the maximum file name length?
Different operating systems have different maximum file names Does java have any restrictions on the length of file na…… -
Java – the application starts searching for GPS when the application starts, not when needed
>I have an Android application that includes Google Maps V2 as part of the feature <uses-permission android:name…… -
Java – ArrayList finds the first and last elements
Good evening, I have an ArrayList (instantiated as ld_data), and I query / display element data forward and backward I…… -
Java – using wildfly 8’s simple rest API
First of all, I am a novice in this environment I've developed Java before, but I'm not an application server I've nev…… -
Java – switch to BigInteger if necessary
I am reading a text file containing numbers in the range [1,10 ^ 100] Then I perform a series of arithmetic operations…… -
Convert Java bytecode to other presentation and programming languages
I am looking for ways / tools / projects to convert Java bytecode to other programming languages, or at least in struc…… -
java – Hibernate – hibernate. hbm2ddl. auto = validate
I'm interested in hibernate hbm2ddl. Auto = interested in the actual work of verification, I am trying to find compreh…… -
Why does’ Java – version ‘go to stderr?
Is there any particular reason why Java is converted to stderr? For example, the command is executed from the prompt l…… -
XMPP – how do I retrieve chat history using the Java smack library from the openfire server?
After installing the open archive plug-in in the openfire server, I can see that the chat conversation between two use…… -
Java – Cross Platform file path construction and representation
I'm in the refactoring phase of my ongoing project and want to make some improvements on how I build and represent fil…… -
. Net – Convert System:: array to STD:: vector
Does anyone know that cli / Net system:: array is a simple method to convert C STD:: vector, in addition to operating …… -
How to change the image permission mode to 777 using java code?
I want to use java code to assign the permission mode value "777" to the image file How can I express it in Java? Beca…… -
Java – hibernate HQL counts are different, can’t they?
I have the following categories: class User { hasMany = [ratings: rating] } class Item { hasMany = [ratings: rat…… -
Java – accessing WSDL on Tomcat
I have a web service and I'm deploying it on GlassFish I passed http://localhost:10697/APIService/APIServiceService?ws…… -
Java – a tricky static generic method with a generic return type, which itself can be generic
I have a course as follows: public class MyConverter { public <T> T convert (Object o,String typeidentifier,…… -
Query documents on array elements in mongodb using java
I'm new to mongodb My sample document is { "Notification" : [ { "date_from" : ISODate("2013-07…… -
Java – implements utility classes and singletons using enumerations
Peter Lawley wrote about two uses of enums that most people forget on his blog First, I didn't forget – I didn't even …… -
Allow two or more mobile virtual machines to communicate on their own network
I want to create multiple servers that can communicate directly without using public IP They still need internet acces…… -
Java – Guice only registers some constructors
Suppose I have some message classes, as shown below This is a simple combination class public class Message { privat…… -
Java – how to set a value to a class variable without using a setter
I want to insert a value into the object variable without using a setter How is that possible? This is an example Clas…… -
Java – how to set default headers for all requests in the Apache HTTP client?
For example, the default user agent can be set to: Solution Httpclient 4.3 now allows a set of default headers to be c…… -
Java – how to subclass the general ArrayList so that the instance of myarraylist will become a subclass of ArrayList?
I want to keep my subclass generic. All I want to change is the add (object) method of ArrayList to call ArrayList Add…… -
Does Java sync update the full cache, or only my synchronized objects?
If I access objects in a synchronization method or synchronization block, are all objects in the accessed element sync……