Recent Posts
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Java – Tomcat spring and environment variables
In the spring file, I have: <bean id="propertyConfigurer" class="org.myapp.MyConfigurator"> <property…… -
Java – JDBC transaction and connection clarification
I'm using JDBC to talk to my Postgres database If my entire application runs a single connection, that is, there is on…… -
Set the default application icon image in Java swing on OS X
I'm setting up an icon image for a jar file: setIconImage(new ImageIcon(getClass().getResource("logo.png")).getImage()…… -
java – Guice inject. GetInstance () – good practice?
Suppose I have two applications that share the same library The library contains common classes, such as Dao, utils, e…… -
Java – spring request scope bean
How do I set up a bean that will be created once upon request I try to do this: @Component @Scope(value = "request"…… -
Identifying file types in Java
Please help me find out the type of file being uploaded MimeType returns the same way for both files Please help. Solu…… -
Java – can you share a link to a URL parsing implementation?
As far as I know, the URL consists of the following fields: >Protocol (HTTP, HTTPS, FTP, etc.) > user name > …… -
Multithreading – deep analysis of the differences between CPUs and GPUs
I've been looking for the main difference between CPU and GPU, more accurately, separating the subtle differences betw…… -
Java – what is the point of beans?
I have some JSP tutorials for beans. I don't understand what a bean class is All is to get and set methods Why use the…… -
Java – implementation comparable to generic classes
I want to define a class that implements a general comparable interface In my class, I also define a generic type elem…… -
Java – synchronization difference between field reading and volatile
In a good article with some concurrency tips, an example is optimized to the following lines: double getBalance() { …… -
Java – use static variables in spring annotations
I am using spring's preauthorize annotation as follows: @PreAuthorize("hasRole('role')"); However, I have defined 'rol…… -
Reduce image resolution in Java
I need to use a java program to reduce the size of the image (not the width and height) I need to reduce the size from…… -
Java – different series of xyline charts in different colors JfreeChart
I have created an XY line graph using JfreeChart. There are two data sets. I want both rows to be in different colors …… -
Java – the jdbc driver throws a “resultset closed” exception on an empty resultset
I have a problem with the jdbc driver for SQLite I am using the select statement to execute the query If I get an empt…… -
Java – how to make the variable method take a single array as the first value of the varargs array?
Given the variable: Object[] ab = new Object[] { "a","b" }; Object[] cd = new Object[] { "c","d" }; When the following…… -
Java print string variable
When I run (seemingly simple) code, I get some strange output This is what I have: import java.util.Scanner; public c…… -
Java – is it bad practice to capture numberformatexception?
I have to parse a string that can take hexadecimal or other non hexadecimal values 0xff, 0x31 or a, PC, label, etc I u…… -
Java – query object pattern
I need to implement a query object pattern in Java for my customizable search interface (webapp being written) Does an…… -
How to use SNMP and Java?
I'm writing an application to access network printers As part of this application, I need to know the "status" of the …… -
Java – Eclipse RCP code error when deploying product
I'm creating an RCP application with many Greek messages, so everything is UTF-8 When I developed and tested through t…… -
How do I debug a Java Web start application?
I have a Java Web start application that starts from a real-time site by downloading custom JNLP files The problem is …… -
JPA best practices and Java 8 optional return?
I like the semantics of Java 8. I use a lot of such code in my Dao: public Optional<User> findBy(String username…… -
Java – get the most common image colors
I want to get the most common colors from the image I use Java and I want to have the main color Is there any CBIR Jav…… -
How to set timeout on BufferedReader and printwriter in Java 1.4?
How do I set timeouts in BufferedReader and printwriter created using socket connections? This is my code for the serv…… -
Java – replace El in JSP with spel from spring 3.0
Tired of old el, unable to call bean and other methods in JSP Can I use spiel from spring 3.0 in JSP? Solution Upcomin…… -
Java – add parameters to the job context from the tasklet step and use them in subsequent steps of spring batch
Now, I use jobparameters to get the file names of my flatfileitemreader and flatfileitemwriter My batch can be tested,…… -
Migration of JAXB for Java – Weblogic 12C disaggregation
We have a Weblogic 10.3 5.0, we are migrating to WL 12.1 2.0. 0. We are solving the problem of ungrouping WS calls fro…… -
Java – the difference between resteasy and jax-rs
What is resteasy? What is the difference between resteasy and jax-rs? Solution According to its home resteasy is So ja…… -
Virtual machine – import VHD to Parallels Desktop 6 on MAC
I see everywhere, but I can't find the answer, so: I have a VHD image created for me by a customer - he installed win7…… -
Using another constructor in Java
consider: int a = 0; int b = 3; //Constructor 1 public ClassName (int a) { this(a,b); //Error …… -
URL routing in Java
From other web frameworks, I'm used to being able to map part of a URL to method parameters I know web XML provides a ……