Recent questions tagged JAVA

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java - JUnit right way of test expected exceptions

Hello guys I was wondering if this way of testing my exception is ok, i have this exception i need to throw in the ... ", e.getMessage());; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How much code should one put in a constructor?

I was thinking how much code one should put in constructors in Java? I mean, very often you make helper ... Are there exceptions to this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - javax.net.ssl.SSLPeerUnverifiedException: Hostname not verified:

I am trying to use HTTPS connection with self-signed certificate. I have followed steps of creating self-signed ... , please any thoughts ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Count in Spring Data MongoDB repository

I wonder if there's any mechanism to use count in Spring Data MongoDB repository with @Query annotation? I would love ... {"type":"foo"}).count See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - AOP Exception Handling

I see that Guice and Spring use AOP Alliance under the hood for method interceptions, and I've been trying to ... else, where? AspectJ? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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478 views

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java - Netbeans with JAXB Random ClassCastException ..cannot be cast to com.sun.xml.bind.v2.runtime.reflect.Accessor

I have downloaded the Soap messages from a SOAP Service and trying to mock the Soap service by returning the ... and possible solutions? Thank u See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - In MVP is onClick responsibility of View or Presenter?

In the MVP pattern who is responsible to handle clicks on the UI? E.g. the non-MVP approach would be ... ? Can someone please clarify this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Check if a generic T implements an interface

so I have this class in Java: public class Foo<T>{ } and inside this class I want to know if T ... its signature. Is it possible? How? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How do I get Sonarcloud to run on pull requests from forks with Travis, Maven & github

While looking into my recent question Sonarcloud failure with Travis, Maven & github I realised that I was asking the ... t have an answer yet. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Adding an annotation to a runtime generated method/class using Javassist

I'm using Javassist to generate a class foo, with method bar, but I can't seem to find a way to add ... @interface MyAnnotation { int value(); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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150 views

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java - How do i pass a context to an AsyncTask?

I want to preform a Toast when a background task is completed, just to let the user know that it's finished. I ... ); toast.show(); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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387 views

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java - Stop threads before close my JavaFX program

I'm having a problem with closing my application because some threads are still running after I close the ... about it on Github project See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Using .getDeclaredMethod to get a method from a class extending another

So lets say I am trying to get a method from a class using Method m = plugin.getClass().getDeclaredMethod(" ... sound confusing, a bit tired. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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333 views

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java - IntelliJ IDEA + Maven what is the need for dependency entries in an iml file?

In Maven, the dependencies of a project is specified in the pom.xml file. In IntelliJ IDEA, the same ... same infromation in two places? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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418 views

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java - Regular expression does not match newline obtained from Formatter object

I cannot match a String containing newlines when the newline is obtained by using %n in Formatter object or String. ... version is 1.6.0_21. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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185 views

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java - Using RxJava and Okhttp

I want to request to a url using okhttp in another thread (like IO thread) and get Response in the Android ... know how to create an Observable. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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119 views

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java - How to config "CommonsMultipartResolver" in spring4 without xml to upload file

I use xml config spring4 is work well.like this： <bean id="multipartResolver" class="org.springframework.web. ... .Thread.run(Unknown Source) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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257 views

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java - How to use the "sysout" snippet in Eclipse with selected text?

I am aware of the Eclipse snippet "sysout" which is neatly replaced with System.out.println(); when tab- ... the selected text. Any idea? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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315 views

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java - Apache PoolingHttpClientConnectionManager throwing illegal state exception

Here is how I use it - private static final PoolingHttpClientConnectionManager connPool; static { connPool = new ... than a single conn See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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998 views

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java - Android Error when communicating with the Firebase Installations server API

I am getting an Error Message on App Startup Stating Logs like W/Firebase-Installations: Error when communicating ... .md Thanks in Advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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364 views

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java - Static initializer runs after the constructor, why?

I have 2 classes: Class A: public class A { static B b = new B(); static { System.out.println(" ... to avoid static initializers all together ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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303 views

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java - How to submit data with Jersey client POST method

I am new to Jersey. I need to implement a Jersey client to submit data with POST method. The curl command is: ... Can someone help me with it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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317 views

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java - Regarding immutable List (created by Arrays.asList())

When we create a list from an array using java.util.Arrays.asList(), the list is immutable. I am just ... this while working on my assignment. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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395 views

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java - Eclipse on Mac 10.8 - Installed 1.7.0 JRE / JDK, but Eclipse won't launch

Installed Java SE 1.7.0u10 from Oracle w/ their installer package Downloaded and unpacked Eclipse Juno (4.2.1) Double ... to bug me... :o) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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202 views

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java - Does serialization preserve object identity?

I am using the Java Serializable interface and the ObjectOutputStream to serialize objects (until now, this method has been ... .b2.a); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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240 views

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java - GC performance hit for inner class vs. static nested class

I just came across a weird effect and while tracking it down, I noticed that there seems to be a substantial ... classes so much slower here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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276 views

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java - In what situations could an empty synchronized block achieve correct threading semantics?

I was looking through a Findbugs report on my code base and one of the patterns that was triggered was ... achieve correct threading semantics? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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138 views

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java : accessing static variables inside static block

Analyzing some weird scenarios in following static block : static { System.out.println("Inside Static Block"); i= ... name while SOP requires ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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