Java
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Java – GWT requestbuilder – cross site request
I'm trying to create a cross site request using the GWT request builder, but I can't make it work As you can see, this…… -
Performance loss of getserializedsize() in Java – protocol buffers
Does calling getserializedsize() on a GPB message cause performance degradation before serializing the message using w…… -
Java – use the for loop to get the Hamming distance between two strings
In this task, I need to obtain the Hamming distance between two strings sequence1 and sequence2 (the Hamming distance …… -
Java – why doesn’t the acquire () method in semaphores have to be synchronized?
I'm using java to enter semaphores and reading this article http://docs.oracle.com/javase/1.5.0/docs/api/java/util/con…… -
How to use JUnit to test the spring controller method
Hi, I'm new to spring and JUnit There is a method in my controller I want to write JUnit (getpersons ()) for this meth…… -
Java – what is the reason for using openjdk?
I understand the difference between Oracle JDK and open JDK in some way But I can't find a reason to use open JDK, bec…… -
JavaFX WebView JDK 8 failed to load the self signed certificate
I'm trying to implement WebView into my JavaFX application, and I'm using JDK 8 to develop it When I use webengine to …… -
Java – jdbctemplate in Clause for string element
I use the namedparameterjdbctemplate for clause element, one of which seems to be list < string > Replace them w…… -
Java – pass joda time objects between app layers
I'm thinking about using joda time Solution At the beginning, only the most appropriate type (joda objects in this cas…… -
Error parsing string to date in Java
Yes, another Java date post:) My question: Simple standard code to test whether the insertion date is in the form of r…… -
java – System. Console () returns null from eclipse, but the command prompt is good
When I use eclipse Helios system Console, it always returns null However, when I use it directly from the command line…… -
@ parameters in JUnit 4
Can I use multiple @ parameters methods in JUnit test classes running with the parameterized class? @RunWith(value = P…… -
Java – is there a way to automate JUnit bean property testing?
Let's face it, writing bean property tests is probably the worst time usage But they need to finish For example If the…… -
Java – use dialoginterface Onclicklistener distinguishes a single dialog
We have two alertdialog objects AlertDialog dialog1,dialog2; Both dialog boxes are through alertdialog Created by buil…… -
java – ArrayList. Remove does not work the first time it is called
I have an ArrayList < string > I use to store packageinfo (an example of an element in ArrayList is "com. Skype.…… -
How to use index for O (1) random access sort set
You need a string collection, in which the inserted elements need to be sorted or non repeated, and can be retrieved b…… -
Override Java methods that require double arrays
Suppose I define the following Java interfaces: public interface A { public Double[] x(); } Then try to implement it…… -
Java – handling catastrophic exceptions
I read in the c# primer that if you don't know how to handle it, you shouldn't find exceptions Considering these sugge…… -
Java – spring profile contains yaml files
When the team set up WebSphere profile activation, I was trying to complete the cloud profile activation Yaml file ---…… -
Java – scan components of different Maven modules / jars in spring boot applications
I have two Maven modules package org.example.application; @SpringBootApplication @ComponentScan({"org.example.model",…… -
Java – ooobeans dead What choice do I have?
Recently, I started exploring the office bean library. In other words, I tried to run a simple OOo bean example First,…… -
Java – communication between two jpanels
I have this "main" panel (let's call it AAA) and borderlayout, as well as two panels (BBB and CCC): public class AAA e…… -
Java RMI: requires sniffer
How do I sniff and analyze Java RMI traffic? There are only very local solutions in Wireshark I need to know exactly w…… -
Java – you cannot use getdeclaraedfields() to retrieve fields from Scala classes
I'm trying to use Scala's Java library (johm) and notice that when lib tries to use something like model getClass(). G…… -
Java – exclude packages from Proguard
In Proguard How to include certain packages after excluding parent packages from CFG: For example: -keep com. myapp.**…… -
How do I mark Java methods as “must use results” for static analysis?
When compiling C or C with GCC, you can mark functions with attributes ((warn_unused_result)). If you call a function …… -
Java – instance level access control in Apache Shiro
I found a flexible security framework Apache Shiro I successfully realized authentication and authorization with Shiro…… -
Java – why does my compiled class have its method local variables renamed?
I have a kitchen Jar file I need to modify one of its classes I decompile it with JD Then I modified toster Java file …… -
Java – unexpected action of light source in the room
I've written several Android apps, but this is my first time using 3D programming I created a room (4 walls, ceiling a…… -
JPA – the difference between the methods of ‘detach’ and ‘Remove’ entitymanager
I want to know what is the real difference between em.detach (entity), em.remove (entity) and using jpql requests: em.…… -
Java: how to parse XML in E4X?
I wonder if there is a way to parse XML using E4X, or something like E4X Does such a framework / library exist? thank …… -
java – NoSuchMethodError：com. google. common. base. Stopwatch. createStarted()Lcom / google / common / base / Stopwatch
My app is throwing nosuchmethoderror: com google. common. base. Stopwatch. Createstarted() LCOM / Google / common / ba……