包含标签：Java 的文章
-
Java optional question, did I do this?
I have a "bad habit" of throwing zeros somewhere, such as enumerator when something doesn't exist Example: private enu…… -
Distributed HashMap or distributed information storage in Java
Does anyone know a good java framework for distributed hash mapping (DHT)? I used overlay Weaver some time ago, but th…… -
Java – why didn’t this gridbaglayout appear as planned?
I try to achieve the final result required by setting an arbitrary width in gridbaglayout For reference, here is: This…… -
Java ternary operator syntax
See English answers > terminal operator, syntax error when using assignment In the first case, the ternary operator…… -
Java – in POM The Proguard configuration file is included in the XML
I tried to confuse Java class files I've used ant before, so I've built it through 'build XML 'contains the following …… -
Java – thread safe enum singleton
Enumeration helps create singles I know enumeration methods are not thread safe, so I try to make them thread safe Any…… -
Java – additional conditions for adding querydsl to on
Can I execute the following queries in querydsl? SELECT p.* FROM parts_table p LEFT JOIN inventory_balance_table i ON …… -
Java – GWT code server uses Maven prototype and does not find modules in the newly generated project
I have been working with GWT and eclipse for some time. I want to play with Maven and GWT plugin (GWT Maven plugin, en…… -
Java – use the original string in the modified mail request body
I want to send user: user in the post request body I'm using lib Please advise me I've tried this before @POST(/login)…… -
java – log4j. Properties does not work properly on wildfly
I have a log4j in my classpath Properties file It is located on APP / XX jar / log4j. Properties location I noticed th…… -
Assembly – returns the location of the program counter after the interrupt handler?
Hi, I want to know where the program counter is when the program returns from the interrupt service program? I know th…… -
Java – unable to run program “/ applications / utilities / terminal. App”: error = 13, permission denied
I encountered a lot of complex problems when running the following code: package practice; import java.io.IOException…… -
Who can explain the steps to calculate this equation? Java
Write a program to calculate the following equation I'm not asking for a solution Yes, it's a homework question, but I…… -
Java – countdowntimer cancel() does not work
I am new to Android development and try to make small games Any ideas? Thank you for your answer! CountDownTimer cdt =…… -
Java – where data is stored in the kubernetes cluster
How do I write / read data controlled by the replication controller and "hide" behind the service in kubernetes? If I …… -
Java – learn rest and get stuck on the IllegalStateException
I'm trying to learn from rest. I'm trying to make a simple test project to act as a smoke test I did four classes @App…… -
How to call a parameterized getter a mapper in a Java 8 stream?
Use case I currently have this pattern in many adapters: entries.stream() .filter(Entry.class::isinstance) …… -
Java – using web XML and setmaxinactivitinterval set the difference between session timeouts
I asked the user to authenticate in the session and the session timed out after 10 minutes of inactivity After the ses…… -
Is there any way to delete all contents in VBox in JavaFX?
I'm trying to do a JavaFX project I have some questions Solution oh I just figured it out I can use v@R_716_2419 @.get…… -
Java – jar in classpath
Is there a way to programmatically get a complete list of all jars in the classpath? I need this because we have behav…… -
How can I / O multiplexing be used to process requests asynchronously in a java server?
Suppose I'm writing a java server that communicates with clients over TCP / IP The server uses I / O multiplexing Ther…… -
Memory comparison of scala array [int] V / s int [] in Java?
Do they have the same memory? Array is an abstract class, so will it cause any object title cost? Are other Java primi…… -
java. Lang. IllegalStateException: getoutputstream() has been called for this response
See English answers > getoutputstream() has already been called for this response 12 So I created a servlet and got…… -
-
Java – should I leave behind methods I don’t use in class?
I have a class (> 400000 instances) that is heavily used in programs with heavy performance Will leaving these meth…… -
Java – how does arraybuffer work in memory?
I want to use arraybuffer in my program to save a list of numbers I want to use it as a queue Delete the first item in…… -
Java – create a switch case onclicklistener for textview
I just started programming in Java and had some trouble implementing the onclicklistener switch case for clickable tex…… -
Java – how to create a new localdatetime with zero time zone?
new LocalDateTime(“1999-12-31T00：00：00Z”); When I try to create this date, I get: Exception in thread "main" java.la…… -
Java – drag / move shapes around the JPanel
Yesterday I asked a question about how to draw a bounding box to maintain the internal shape and how to drag and drop …… -
Java – greenroot eventbus failed to send event
I'm using eventbus to pass from a long-running thread to fragments that update its UI This long - running thread is ba…… -
Why is this wrong? About Java 8 streaming media
public interface Filter<M> { public interface Filter<M> { boolean match(M m); public static <…… -
Java – get ultrasound from Android using frequency
I want to get ultrasound from any Android device, such as ultrasound with a frequency between 18khz and 19khz I use th……