Java
-
Java – how to convert an 18 Bit numeric string to BigInteger?
Someone can help me convert an 18 digit string number into BigInteger in Java Namely; The string "0x999999999999999999…… -
Java – cannot catch constraintviolationexception
I can't seem to catch the constraint violation exception, but I see it in the log entity @Column(unique = true) privat…… -
Java – eclipse Juno: unassigned closable value
I wonder why I got the warning of this new eclipse Juno, although I think I closed everything correctly Can you tell m…… -
Java – singleton mode
Recently, I asked questions about Java in an interview with the following code. Because I just started using Java and …… -
Java – error reading type of elexception
When I showed my JSP page and tried to call a defined getCurrentlocation () function in the Person type, I received an…… -
Java / Swing: convert text string to shape
I want to convert some arbitrary text into shape (Java. AWT. Shape), and then stroke / fill the shape What shall I do?…… -
What is the best way to inform administrators about new exceptions to Java applications?
My question is what is the best way to track exceptions from application administrators (for maintenance purposes, not…… -
Object oriented programming: abstract data types in Java
In this article, we will examine data types in Java, but we will introduce the concept of abstract data types (ADT). W…… -
Learn game design of Java swing from me (2)
Remember the minicooper who shuttles through the traffic of Hollywood like an elf in stealing the day? Mark Walberg an…… -
Java – multithreading – multiple users
When a single user accesses an application, multiple threads can be used. If there are multiple cores, they can run in…… -
Self modifying code in Java
Have you ever created or encountered self modifying code in Java? Solution Ignore the sad world, you may pass the self…… -
Java – libgdx: read from JSON file to ArrayList
I need help reading the JSON file to ArrayList I have JSON files: [ { "name": "Wall","symbol": "#",},{ …… -
. Net – multithreaded self managed WCF service
It seems that WCF uses only one thread when using self - hosting I want to use multiple threads or some kind of thread…… -
Java – sets the button height and width to wrap the contents and populate the parent
I'm developing an application where users should be able to change the appearance of buttons by pressing other buttons…… -
Java online book Mall (9) payment module
This example shares the specific code of the payment module of java online mall for your reference. The specific conte…… -
Eclipse failed to load javahl library solution
Eclipse failed to load javahl library solution Today, when you open eclipse, a window pops up saying failed to load ja…… -
Can I build result sets from files in Java?
I don't have much experience in using result sets, but since resultset is an interface, I think I can implement it to …… -
Java – Jersey ‘nocontent’ response returns 200 instead of 204
I'm using Jersey (1.18) to build a rest API for my web application In part of my code, I have the following code snipp…… -
Java – log forging enhanced repair
I'm using fortify SCA to find security issues in my application (as a college assignment) I encountered some "log forg…… -
Java – why do I get Maven error: “unable to determine whether resource x exists in http://maven.glassfish.org/content/groups/glassfish ”？
Whenever we execute our website target in maven, we get a long list of dependency related errors in the console log Th…… -
How do I use wkhtmltopdf in Java Web applications?
I'm a wkhtmltopdf novice I want to know how to use wkhtmltopdf with my dynamic web projects in eclipse? How do I integ…… -
Java – how to enforce a method in a subclass without using abstraction?
I want to force subclasses to implement an implementation method of my mother class public class myMotherClass { …… -
McCabe cyclomatic complexity for switching in Java
I use the switch statement for 13 cases, and each case has only one line of return value McCabe daubed it in red Is th…… -
The Java – c3p0 connection pool did not close the connection
I have one using c3p0 0.9 1.2,hibernate 3.2. 1. GA and spring 2.5 5. The problem is that the database connection is no…… -
Why do lambda expressions in Java 8 need to use variables to use the “final” modifier instead of using method references?
Consider the following courses: class Foo<T> { void handle(T t) { System.out.println("handling " + …… -
Java – how do I get the JRE / JDK that matches the source?
I want to get at least one JRE / JDK level on my windows machine. My JRE / JDK source matches the exact level of JRE /…… -
How do I iterate over a stack in Java
I want to know how to use iterators in the stack class How do I create an iterator class for it? Solution Just get the…… -
Java – Maven changes the order of plug-ins for different configuration files
I have a POM XML, I defined the same plug-in in two different configuration files (the same groupid and artifactid, di…… -
Java – what are the different ways to handle errors in the FreeMarker template?
How to suppress FreeMarker template errors? class MyTemplateExceptionHandler implements TemplateExceptionHandler { …… -
Method of verifying sqlmapper configuration file of mybatis using XSD (2)
In the last article, I introduced the method of using XSD to verify the sqlmapper configuration file of mybatis (1). F…… -
Java – no authenticationprovider found usernamepasswordauthenticationtoken
My web XML configuration is <filter> <filter-name>springSecurityFilterChain</filter-name> …… -
How to disable log4j logging from Java code
I use log4j to write to the old version Library of logs My default log4j The properties file points logs to the consol……