Recent questions tagged JAVA

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java - Validate XML using XSD, a Catalog Resolver, and JAXP DOM for XSLT

Background Using JDK 6 to load XML files into DOM. The XML files must be validated against an XSD. The XSD ... XML using an XSL template. 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 - Retrofit not working on specific versions of android

I have a problem with Retrofit on my emulator running Android 4.3 and my device is on Android 4.4.2 while the same ... occurred", t); } }); 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 to add border to panel of javafx?

I am developing a application where I need some widgets to wrap up inside a panel. And I want to put a border ... [i].getChildren().add(output); 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 - Why can a "private" method be accessed from a different instance?

Although, this is a very basic code, it seems there is something fundamentally flawed in Java, or the JVM used by ... .. Anyone, please reply... 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 GSON to parse array with multiple types

I wish to use GSON to parse the following json: [ [ "hello", 1, [2] ], [ "world", 3, [2] ] ] So ... Java to model this? Can any help? Thank you. 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 - Create new ClassLoader to reload Class

I want to create a new ClassLoader everytime my method is called. So I can reload a class without exiting my ... . How can I achieve that? 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 - Android: get all the notifications by code

I am using some home replacement that allow me to hide the notification Bar and that's something I really like. ... lot for any clue or help. 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 - Fused Location Provider: Is there a way to check if a location update failed?

Introduction In my app I want to get a one-off accurate location of where the user currently is. When I used ... reading, please help me out. 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 - Passing Derived Class to a method which needs to override expecting a base class

I have a class A, with an abstract method doAction(BaseClass obj) expecting a param of type BaseClass public ... expecting a BaseClass ? 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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java - Returning an objects subclass with generics

With an abstract class I want to define a method that returns "this" for the subclasses: public abstract class Foo ... message "Not a cake!" 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 - Abstract class with all concrete methods

Are there some practical programming situations for someone to declare a class abstract when all the methods in it are concrete? 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 - AutoCompleteTextView - disable filtering

I'm retrieving a list of strings from a webservice and I want to list them up on a AutoCompleteTextField ... me to the right direction. 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 to make a "do not ask me again" dialog pop-up box? Android

I am trying to create a "hint" dialog box that informs the user about enabling GPS on their phone will decrease ... it uses more battery!"); 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 to programmatically check availibilty of internet connection in Android?

I want to check programmatically whether there is an internet connection in Android phone/emulator. So that once ... , else doSomeThingElse();" 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 - Jackson deserialize object or array

I have a Jackson Question. Is there a way to deserialize a property that may have two types, for some ... Any help is appreciated! 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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345 views

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java - Android: Jumbo Mode vs Multidex

I'm not totally sure what the difference is between setting dex option "jumbomode" to true vs adding multidex support. ... .java:49)"} ... 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 - What are good reasons for choosing invariance in an API like Stream.reduce()?

Reviewing Java 8 Stream API design, I was surprised by the generic invariance on the Stream.reduce() arguments: <U> U reduce ... , out R>, ...)? 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 - safe publication and the advantage of being immutable vs. effectively immutable

I'm re-reading Java Concurrency In Practice, and I'm not sure I fully understand the chapter about ... an unsafe publication be wanted? 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 - Store an array in HashMap

i'm new to Java. How can i store an array of integers values in a HashMap, after that i write this HashMap ... An exception has occured"); } } 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 - C3P0 apparent deadlock when the threads are all empty?

I'm using C3P0 as a connection pool in Tomcat, and I'm seeing very worrying errors: 2010-09-16 13:25 ... (10); ds.setCheckoutTimeout(1000); 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 - mock methods in same class

I am using Mockito to mock a method in the same class for which I am writing test. I have seen other ... explain where I am going wrong? 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 - Which version of hibernate support jpa 2.1?

Currently I am using JPA 2.0 with hibernate 3.6 . I tried to search but couldn't find, can anyone ... supported by which versions of hibernate? 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 - JSR 303: How to Validate a Collection of annotated objects?

Is it possible to validate a collection of objects in JSR 303 - Jave Bean Validation where the collection ... = validator.validate(people); 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 - Where is Thread Object created? Stack or Heap?

When I say something like: Thread t1 = new Thread(); does it create it on a heap or a stack? 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 to explain return statement within constructor?

as far as i know , the constructor return nothing , not even void , and also return ; inside any method means ... just fine . please explain . 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 - Spring-Boot: Handle multiple requests concurrently

I am using Spring Boot to build a RESTful web service. My IDE is Eclipse Oxygen. I send multiple HTTP ... requests from same session? 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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java - How to disable a container and its children in Swing

I cannot figure out a way to disable a container AND its children in Swing. Is Swing really missing this basic ... is not the entire window). 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 - Bearing from one coordinate to another

I implemented the "bearing" formula from http://www.movable-type.co.uk/scripts/latlong.html. But it seems highly ... , x))+360)%360; } See Question&Answers more detail:os...

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

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