包含标签：Java 的文章
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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 …… -
Java – suppress jdk1 4 project warning
Can I create JDK 1.0 in eclipse 4 project prohibition warning? Edit: longer version One project requires jdk1 4 (no no…… -
How to link conditional methods in Java 8
I have a spring security configuration method I want a specific method link ant matchers ("/ * * / * *") Permitall() o…… -
Java – generic filter for enumerations
The following is my class public final class Test { enum Animal {DOG,CAT}; enum COLOR {RED,YELLOW}; class Meaningless…… -
Convert this null check to Java 8 optional
I can't understand how to delete the following null check using java 8 option for (A objA : listOfObjectsA) { if (…… -
Java – JSF inputtext and sessions in JSF managed beans
I want to know how to read the value of the input text from the managed bean @H_ 502_ 9@ @H_ 502_ 9@ <h:inputText i…… -
How to use multithreaded scripts
I am here http://www.get-blog.com/?p=189 Found this multithreaded script Param($Command = $(Read-Host "Enter the scrip…… -
Setting namespaces and schemas using java DOM
There is a root element without attributes in my output XML document: <?xml version="1.0" encoding="UTF-8" standalo…… -
Java – why can’t I get filechannel from filewriter?
I wonder why getchannel is only implemented in fileoutputstream instead of filewriter Is there any real reason? Is the…… -
Java – spring boot 2.1 embedded Tomcat – incorrect keystore password
Update – > add security addProvider(new BouncyCastleProvider()); Solved this problem Adding ActiveMQ broker to my c…… -
Java – get customer orders: set getallorders() and set getallorders()
I haven't done much Java programming, so many unresolved ORM problems come to mind and seem quite direct to more exper…… -
Java fuzzy type method?
Editor: This is not a code problem at all, but there is an error in the groovy Eclipse Plug-in（ http://jira.codehaus.…… -
Java – JUnit test case – set data
I have a simple crud operation that needs unit testing So I have one test case for creating, another for updating and ……