包含标签：Java 的文章
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Java – when to merge code duplicates
We use the code static analysis tool (sonar) to detect duplicate code in the project It seems that there are many repe…… -
ORM – laravel 4: eager to load
I have a table called userwords with a word in it_ ID column, which I want to use to get rows from the words table and…… -
Java – jtextpane prevents scrolling in the parent JScrollPane
I have the following "tree" objects: JPanel JScrollPane JPanel JPanel JScrollP…… -
Support covariant type conversion in Java
The Java type system only supports immutable types So list < string > is not list < Object > The list <…… -
Java – Destroy () or finalize () is called first in the servlet?
In servlet, call destroy () before or after finalize (). Solution First call destroy() Servlet container will call des…… -
Java – how to implement some if then logic using JSF and facelets?
I have a bean with live state Depending on the status value, different CSS classes should be applied to render it So I…… -
Java – swing: pass values back to the UI from a predetermined thread
I have a java system tray UI and need a scheduled database polling What is the best way to generate a new thread and n…… -
How to include the text of a file in Java code?
It seems that Java is not what I used to do in C (there's no big surprise) I have a set of rules generated from anothe…… -
Java – can Maven re sign dependencies?
I'm using maven jarsigner plugin to sign my shadow super can I really need to distribute some dependencies in my jars …… -
Java – how to set the correct last modified header value for spring Web Services cached using spring cache?
I have a spring MVC controller: @Controller @RequestMapping(value = "/user") public class UserController { ..... …… -
Is there a “noreturn” keyword in Java
Sometimes I want to write an error () function, which will eventually call system Exit(), which means that this functi…… -
Java – send commands between two computers over the Internet
I want to use any computer connected to the Internet at home to control my computer (and the USB device connected to t…… -
Java – get POM. From commandline XML attribute
I am currently writing a script for our gitlab Ci, which will automatically upload files to the nfsshare folder on the…… -
Java – detect jdialog resizing
How do I detect when jdialog resizes? (windowlistener was my guess, but there seems to be no resized event handler.) S…… -
Java – what’s the difference between wrapping alfresco extensions as AMP and jar?
I want to understand the consequences of packaging alfresco extensions as jars rather than as amps I'm building alfesc…… -
Java parentheses flip string
How do I replace a string so that "(" becomes ")" and ")" becomes "("? Solution use. Replace (), but if you replace) (…… -
Java – how to change the JFrame content to the corresponding click?
I am using java to develop a simple desktop application There is a menu bar. When the user clicks menu item 1, the con…… -
How to disable all network connections in Java
Is there any way to run Java VM (Java. Exe) on Windows Server 2008 and disable all network connections using command l…… -
Java – J2EE: Singleton vs saving things in a session
When should I keep an object (that is, an application wide property file) in the session instead of creating a singlet…… -
Java – how to find the maximum value in a binary tree
I have to complete the method maxelem (node) in this way, and the method maxelem () returns the maximum value containe…… -
Java – retrieves the number of types in the list
I have a list The list can contain multiple items of the same enumeration type Let's say I have an enumeration: toy is…… -
How do I create a copy of the data type I created in Java?
If I have a class: public class MyType { private List<Integer> data; private boolean someFlag; …… -
Java – Eclipse: some or all of the projects cannot be imported because they already exist in the workspace
Sorry, I know I often ask this question But the non scene suits my problem I use eclipse in Git (in win7) In the GIT b…… -
In Java, can I use conditional expressions to “select” reference types?
Can I use conditional expressions to "select" reference types, as shown below? ??? = isTrue() ? Integer : Double; What…… -
Convert CIDR notation to IP range in Java
See the English answer > converting CIDR address to subnet mask and network address 11 For example, for CIDR 192.16…… -
Java – how to use spring roo to create @ entity without @ version field?
I use spring roo and JPA (hibernate) as my entity model I don't want to have a @ version field in some entities How ca…… -
How to use java to find data in small data sets?
We have to find some data according to three input data fields Search must be fast There are only about 20 possible se…… -
How to override generic list return types in Java
I tried to override a method whose return type is a list in a subclass, as shown in the following example. Due to gene…… -
Strange Java HashMap behavior – no matching object found
When I tried in Java util. When I found a key in HashMap, I encountered some strange behavior. I think I missed someth…… -
Java findbugs: suspicious comparison of long references
Findbugs identified the following error in my code: @ h_ 404_ 7@ if (materialDeFinition.getId() == deFinitionToRemoveF…… -
Java – when deploying spring app in Tomcat 6, an “access denied” message appears
When I tried to deploy my spring application on Tomcat 6, I received an error message java.util.logging.errormanager:4…… -
Java – what did I do wrong with this quadratic formula?
a = 1,b = -7,c = 12 a = 1,b = -7,c = 12 public static void quadratic(double a,double b,double c){ double r1; ……