Java
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Java swing How to wait for other jframes
In JFrame, when I click "login", I pop up another JFrame, namely login window How can I make my main JFrame wait for m…… -
Java – how does a servlet work?
I've written several servlet programs, but I don't think I fully understand how servlets work So this is a husband and…… -
A module error occurred while running the JavaFX media application
When I run a JavaFX 11 application with the following command: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -p ~/.m2/r…… -
Java – is there any practical reasoning to force the build of the JDK version?
There is a maven enforcer plugin that can force the build to run only on a specific JDK version I wonder if there is a…… -
Array – it is faster for PowerShell ArrayList Add or = operator?
I found that if you create an array in the power shell and do this: $myArray = @() $myArray += 7 Each time this statem…… -
Java – Lombok annotation cannot be ignored – sonarqube
When I used the code coverage tool "sonarqube", I tried to ignore Lombok comments in my java project. I studied a lot …… -
Java – implement the project version page in JSF
I am creating a JSF application I have some projects from the database (such as products). I want to create a JSF page…… -
Java – spring MVC – JSP cannot be rendered
I just started trying to create a new project using spring MVC, and I encountered a problem. There is no manual or tut…… -
Arrange the characters of the array in the order they appear in the Java string
I have a string and an array of characters in the string I want to arrange the characters in the order they appear in …… -
Java scheduler
Which is the best way to run a process in a scheduler I can do crontab or spring batch Are there other better options?…… -
Sun training for sun certified Java programmers (scjp) – classroom or web based?
Has anyone had sun training experience? What are the advantages / disadvantages of the two kinds of training? -Goe Sol…… -
BlackBerry – use MIDlet Platformrequest() opens the file
Can I use MIDlet Does the platformRequest (string URL) method let the device open the file on disk? I want to use the …… -
Why not pass every method in Java and throw an exception when passing a function type parameter instead of a consumer?
See English answers > Why do consumers accept Lambdas with statement bodies but not expression bodies? 3 This is my…… -
How do I test null keys on any Java map implementation?
I want to make sure that the map passed to the method as a parameter does not contain a null key People will think tha…… -
When creating Java objects that will be referenced frequently at multiple levels, is it better to use class instances or make classes static?
I'm writing a java game. I need a master database of the unit prototype Database is just a class containing HashMap, w…… -
Bouncing ball in Java
This may be a very basic question, but I can't seem to find any other articles Anyway, I wrote a little bouncing ball …… -
Java – shared variables without synchronization
I read from Java concurrency in practice that it is not good to share variables in threads without synchronization How…… -
Java servlet pool
Servlets 101 under Tomcat 6: Someone can give me a good explanation of the best way, for example Create a collection o…… -
How does Java make windows?
How does the JVM make its window? I know it has jar files and executable files Is it a graphics library standard insta…… -
Java – duplicate fields in JSON response
I used spring boot Jackson dependency and Lombok in my project. In response, I got duplicate fields because of undersc…… -
Java – what is the best mode or method to load a static cache?
Suppose I have the following (assuming only Java 1.4, so there is no generics): public class CacheManager { static…… -
Migration issues from JUnit 4 to JUnit 5
I'm migrating my code base from junit4 to junit5 I used mockito in my testcase Below is the different version I use fo…… -
Write alternatives to Java standard class libraries from scratch
I'm just curious, but I wonder if I can completely delete the Java standard class library attached to the JVM and star…… -
Java – requires pattern advice (hibernate Guice)
I am looking for advice on how to inject runtime dependencies into JPA entities retrieved from hibernate My question i…… -
Java – beansbinding, jgoodies binding, Jface or glazed list?
I started to investigate beans binding and my head began to rotate There are many options, but this is a core design d…… -
Where do I place the comparisons in Java?
I think of this problem over and over again when creating objects that must validate conditions Should checks be place…… -
How do I download old Java
My daughter began to study a level computer science in September this year and hopes to learn a MOOC course on Java in…… -
Java – algorithm problem of finding all valid words in the dictionary
Given a dictionary (just a list of strings) You have received an unknown number of letters from an external source Giv…… -
Preview HTML in Java
Do you know which libraries / methods can do some basic HTML representation in swing? Can you comment on your experien…… -
How can I help the Java Tomcat process regain used memory?
We are running a web application using java 64bit 5 gigs - Xmx maximum heap size We have no control over java code We …… -
Java – finds the second min element from the array
Anyone can convert it in the Java function style (lambda): public int findSecondMin(int arr[]) { int min = Intege…… -
Binary and non binary socketing Java
I heard there was binary communication I'm a beginner in Java. I use plain text. I'm from Java sun. Com tutorial So I ……