Java 归档 - Page 228 of 655

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

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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……

Java

2020-04-26

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……

Java

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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 ……

Java

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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 ……

Java

2020-04-26

Append the character of the last value to the Java list

In view of this input 0000027788|001400000000000000000001224627|G1|||G1 0000027789|001400000000000000000001224627|D1||……

Java

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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

2020-04-26

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……

Java

2020-04-26

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……

Java

2020-04-26

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……

Java

2020-04-26

Java – what is 1L for long, 1F for float, 1D for double, byte?

1L is long, 1F is float, 1D is double. How about bytes? long l = 1l; float f = 1f; double d = 1d; // byte b = 1?; What……

Java

2020-04-26

Java – use Apache spark to write RDD as a text file

I'm exploring spark for batch processing I use stand-alone mode to run spark. Com on my local computer I tried to conv……

Java

2020-04-26

Java – is there a common language?

We are designing an application that can run on windows, OS X, IOS and Android It would be nice to use at least one la……

Java

2020-04-26

Java – how do I create a JList that contains hashtable entries for strings and objects?

I want to create a JList that contains entries for hashtable of string and object: Hashtable<String,Object> The ……

Java

2020-04-26

Java – use progress bar in file search

I am writing an application that will search for specific files from the corresponding path During the search process,……

Java

2020-04-23

Unable to change Java io. tmpdir

I'm trying to change Java. Net using this command io. TMPDIR directory java -Djava.io.tmpdir=/temporary This is not su……

Java

2020-04-23

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We need advice on server software implementation using java NiO

Java – how to make a variable of type float null

Java – syntax errors on tokens. Delete these tokens

Java – how to find the length of a group?

Java – Egyptian scores in C

How to combine two resultsets in Java?

Why is lockless concurrency so large (in clojure)?

Java – add values to terms in the map

Java’s RAM usage does not correspond to what the task manager says

Java – how do I add a scrolling view to the entire activity?

Java – how to hide JFrame correctly

PowerShell – pass ordered hashtable to function

Java – what’s wrong with this thread safe byte sequence generator?

Java – there can be more than 32 locks in the concurrenthashmap

Java – why GWT bootstrap?

Append the character of the last value to the Java list

EJB – unsupported class version error

Java – what is used by < > and what is its name?

Java: how to catch interruptedexception on a thread when it is interrupted by another thread?

Java – batch insert using native SQL in Hibernate

Java – why does @ singleton exceed @ applicationscope in producers?

Java – when security is enabled, launching WebSphere from eclipse hangs

Java – how to change UI based on combo box selection

Java breakout game quit too early

Guava Java eventbus instantiation error

Learning legacy Java systems

Java – what is 1L for long, 1F for float, 1D for double, byte?

Java – use Apache spark to write RDD as a text file

Java – is there a common language?

Java – how do I create a JList that contains hashtable entries for strings and objects?

Java – use progress bar in file search

Unable to change Java io. tmpdir

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