包含标签：Java 的文章
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Java – refactoring foreach to for loop
I have a Java foreach loop (here is a simplified version) List<String> names = getNames(); for(String name:names…… -
Super cannot be the first line constructor in Java when solving the problem
I'm using the csvreader class, which takes local files as input But now, I need to be able to read local files and fil…… -
Java – I can have different copies of static variables for each different type of inheritance class
I want the same static variable with different values, depending on the type of class So I will public class Entity { …… -
What is an effective way to parse strings in Java?
How should I use java to parse the following string to extract the file path? ？ Represents any number of random chara…… -
We need advice on server software implementation using java NiO
I'm trying to calculate the load on the server I have to build I need to create a server and register one million user…… -
Java – how to make a variable of type float null
If my float variable is set to 0, my code works, but if my variable is null, I want my code to work How can I do that?…… -
Java – syntax errors on tokens. Delete these tokens
This is the code I provided for the problem package ca.rhinoza.game; import java.awt.BorderLayout; import java.awt.Ca…… -
Java – how to find the length of a group?
I tried to find a set of lentgh from my preferences set = prefs.getStringSet("key",null); int X = set.leng…… -
Java – Egyptian scores in C
The ancient Egyptians only used fractions in the form of 1 / N, so any other fractions must be expressed as the sum of…… -
How to combine two resultsets in Java?
I have two result sets (RS1 and RS2) with the same fields Now, how to merge the two result sets into one so that dupli…… -
Why is lockless concurrency so large (in clojure)?
I was told that clojure has lock - free concurrency, which is important I use a lot of languages, but I don't realize …… -
Java – add values to terms in the map
I'm trying at @ L_ 403_ 0 @ to add a specific value to the map, where the key is very complex, but the value is a simp…… -
Java’s RAM usage does not correspond to what the task manager says
I play the Java JVM by making 1024 ^ 3 (basically 1GB) byte arrays Before using the task manager (viewing the process)…… -
Java – how do I add a scrolling view to the entire activity?
I tried to add a scrolling view around everything on the active layout, but it gave me an error that it can only be pl…… -
Java – how to hide JFrame correctly
I have a very simple JFrame window with a button: No In the main function, I set setvisible (true); For my JFrame and …… -
PowerShell – pass ordered hashtable to function
How do I pass an ordered hash table to a function? The following error was thrown: "ordered attributes can only be spe…… -
Java – what’s wrong with this thread safe byte sequence generator?
I need a byte generator that will generate from byte MIN_ Value to byte MAX_ Value When it reaches Max_ Value, it shou…… -
Java – there can be more than 32 locks in the concurrenthashmap
I read that concurrent HashMap is better than hashtable in terms of multithreading, because it maps wide locking at th…… -
Java – why GWT bootstrap?
I am new to GWT and am considering using Twitter bootstrap to build CSS framework But then I met GWT bootstrap, which …… -
Append the character of the last value to the Java list
In view of this input 0000027788|001400000000000000000001224627|G1|||G1 0000027789|001400000000000000000001224627|D1||…… -
EJB – unsupported class version error
When trying to invoke an EJB created using NetBeans (using jdk1.7) from a client using the eclipse IDE (using JDK1.6),…… -
Java – what is used by < > and what is its name?
I was working on some sample code, and then it came up: public abstract class RandomPool<T> extends Pool { …… -
Java: how to catch interruptedexception on a thread when it is interrupted by another thread?
I'm developing a multithreaded application to connect to external servers - each on a different thread - and will be b…… -
Java – batch insert using native SQL in Hibernate
I want to use hibernate native SQL to insert records into the database The code is shown below Session session = sessi…… -
Java – why does @ singleton exceed @ applicationscope in producers?
LoggerProducer. Java is a class for generating loggers to be injected into CDI beans: @Inject Logger LOG; Full code: …… -
Java – when security is enabled, launching WebSphere from eclipse hangs
I have a WebSphere Application Server 8.0 0.6, which is installed as part of rad I need to run the server from eclipse…… -
Java – how to change UI based on combo box selection
In the dialog box, if a combination is selected, one group of controls needs to be displayed, otherwise another group …… -
Java breakout game quit too early
I'm programming an introduction online But I'm stuck on a mission Homework is to write a breakthrough game I have succ…… -
Guava Java eventbus instantiation error
I'm trying to use Google's guava Library's eventbus Starting with guava's documentation, it should be easy to instanti…… -
Learning legacy Java systems
My task is to maintain and refactor the legacy @ L_ 502_ 0 @ system I'm currently doing c# and C Net, although I am fa…… -
Convert Java complex objects to JSON
I need to convert the following classes: package comS309.traxz.data; import java.util.Collection; import org.json.JS…… -
Java – should I inherit JFrame / JPanel?
I am used to subclassing window classes in other programming environments, but I often see similar things in Java tuto……