包含标签：Java 的文章
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Verify the URL in Java
Who knows how to use regular expressions to verify the URL format in Java? thank you Solution A very sneaky way is: tr…… -
How to “time out” functions in Java?
private String indexPage(URL currentPage) throws IOException { private String indexPage(URL currentPage) throws IOExce…… -
Java reference
Is there a way to find all references to objects (in Java)? I have an object cache and want to scan it regularly to se…… -
Generate getter / setter in Java (again)
I'm thinking about writing class MyClass { @Get @Set protected int aValue; } Then, get is automatically generate…… -
Java – why not run server-side applications with daylight saving time enabled?
I have implemented a server - side application that records the timestamp when the record is created and updated The a…… -
Java – find two pairs from an array of integers in two elements
Two pairs: if there are two pairs of dice with the same number, the player scores the sum of these dice If not, the pl…… -
Java mail API: send e-mail through enterprise outlook account
I want my program to be able to send e - mail from my corporate outlook account I've seen many examples of JMA, which …… -
Java – Installation failed due to invalid URI
[2013-07-21 11:14:01 - AndroidTrial] Installation Failed due to invalid URI! [2013-07-21 11:14:01 - AndroidTrial] Inst…… -
Java inheritance method with return type
Is it correct to write such a course? The problem is the method getprice () in the item class Each item needs a getpri…… -
Language independent – runnable pseudocode?
I tried to identify existing technologies for the following ideas: 1) The user types a language called (insert_name_he…… -
Java – how to split strings with 𞓜
See the English answer > splitting string with pipe character ("|) 5 I separate each letter: My code is String strH…… -
Java – why is enum considered safer than constants?
In our example, we can choose to define an enumeration type that will limit the possible specified values (i.e. improv…… -
Java – how to load property files based on spring configuration files
How to create a project architecture to support multiple environments With the help of spring, each environment will h…… -
Java – how to find the calling class?
How can I find out which class / method calls the actual method? Solution You can try to create an exception to get it…… -
Java – even in flush()/. Filewriter will not write to the file after close()
I tried to write a text file, but even if the method creates the file, if it doesn't exist, it won't write I have pass…… -
Java – questions about reversing strings
I'm trying to do a simple string operation The input is "murder". I want "murder" I tried this String str = "murder"; …… -
Java – make columns uneditable in JTable
I use NetBeans to create a masterdetail simple form, and I have a JTable related to the database I want to edit the co…… -
Java – teamcity – build number – pass in ant script
I want to pass the build number in teamcity as a parameter to the ant script Who knows the exact syntax for doing this…… -
Is there a parallel processing implementation of HashMap for Java? Is it even possible?
Looking for the magical parallelhashmap class More succinctly, can you use multiple threads to speed up HashMap lookup…… -
Java – can multiple @ qualifier annotations be used in spring?
I have a set of beans that feature two properties They are basically serializers for different classes and purposes Fo…… -
java – boolean. Isinstance (true) is false?
problem Class objects of Boolean fields do not recognize other Boolean values as instances code public class Test { …… -
Multithreading – switch to parallel coding
We all write code for a single processor What do we need (software tools, logic, algorithms) to implement this transfo…… -
Java – split string – Cartesian
The following string is given: “foo bar-baz-zzz” I want to divide it into the characters "" and "-", keep their values…… -
Java – why do internal static classes extend external abstract classes?
I'm trying to extend some existing code that implements trees using composite patterns As expected, there is an interf…… -
Java – understand the “symbol not found” error
What is this mistake? cannot find symbol,symbol: method getstring(java.lang.String) Location: class InternalFrameDemo…… -
Why not use class for Java – t getInstance (final type)?
So I'm delving into Java and curious about the use of this type parameter <T>T getInstance Then arg Class<T&g…… -
E-mail module in Java?
Please suggest the best email module for sending email in Java Solution To further simplify the use of JavaMail, you c…… -
I can’t figure out my simple java homework
I have this programming task, which can convert between meters and feet, and between kilograms and pounds When I told …… -
Why does the Java ArrayList class return a Boolean value to add?
My teacher gave me this analogy to the method I was writing I still don't understand why the add method returns a Bool…… -
Default initialization of private fields in Java
Suppose I have a class named person: class Person{ private int num = 1; } When calling an empty constructor for th…… -
Java – what’s faster – storing data in lists or databases? (robot)
I am currently working on a school project (Android application). We should store user fee and income information in t…… -
Java EE App Server Hello World
I am very familiar with individual Java application development, but I will soon use Java EE application server develo……