Recent questions tagged java

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java - Exception : javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated

public HttpClientVM() { BasicHttpParams params = new BasicHttpParams(); ConnManagerParams.setMaxTotalConnections(params, 10); ... 7 HttpClient 4 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 @Nonnull annotation checked at runtime?

I have a function with following signature public static String myFunction(@Nonnull String param) When I call it with ... Oracle JDK 1.8.0_102 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 persist a List of Strings in Hibernate?

I seem to have problems with mapping a List in Hibernate. In our project there a class Card with ... have the @Entity annotation? Regards 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 - find out the elements of an arraylist which is not present in another arraylist

I have to find a best way to find out that elements which is not presented in the second arraylist. suppose ... the best solutions to do 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 - Getting child elements from LinearLayout

Is there a way to obtain a child element of a LinearLayout? My code returns a view (linearlayout), but I need ... children in java - not XML.) 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 - GSON - Get JSON value from String

I'm trying to parse the JSON String "{'test': '100.00'}" and in order to get the value: 100.00 with ... the quotes. How can this be achieved? 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 - Change String-Array in Strings.xml to ArrayList

I'm developing an Android app. I need to convert a string array into an ArrayList. I've read up on this, and ... ID, and store that as Lines? 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 use assert in android?

I want to use assert obj != null : "object cannot be null" on Android device. The assert doesn't seem to work, ... control). How can I do 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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java - equivalent to push() or pop() for arrays?

I am trying to add, remove and reference items from an array I create in my main java file, but I am ... is there an equivalent in android? 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 - Calculating powers of integers

Is there any other way in Java to calculate a power of an integer? I use Math.pow(a, b) now, but it returns ... simple as a**b like in Python? 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 - Difference between e.getMessage() and e.getLocalizedMessage()

I am using these both methods to get the message thrown by the catch block while performing error handling Both of ... these methods to my use 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 remove first and last character of a string?

I have worked in SOAP message to get LoginToken from Webservice, and store the LoginToken in String and used ... [wdsd34svdf] I want wdsd34svdf 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 create a new file together with missing parent directories?

When using file.createNewFile(); I get the following exception java.io.IOException: Parent directory of file ... the missing parent directories? 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 - multiple one-to-many relations ResultSetExtractor

Let's say I have an object with two different one-to-many relations. Much like: Customer 1<->M Brands and ... off than lists in this case? 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 - Getting the most common color of an image

I'd like to get the most common color from an image. I use Java and I want to have the most predominant ... java library to make this? 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 - Getting raw HTTP response headers

Is there any way to get raw response http header? The getHeaderField() method doesn't work for me, because server ... and some of them get lost. 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 - Implementing custom validation logic for a spring boot endpoint using a combination of JSR-303 and Spring's Validator

I'm trying to implement some custom validation logic for a spring boot endpoint using a combination of JSR-303 Bean ... spring boot 1.4.0. 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 - Volatile: why prevent compiler reorder code

In java, with my knowledge, volatile variable make a thread reads/writes directly to main CPU (not in cache of ... statement of code. 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 - Does multithreading always yield better performance than single threading?

I know the answer is No, here is an example Why single thread is faster than multithreading in Java? . So ... example to explain in the answer. 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 JPA/Hibernate Criteria to pull between a date

I am trying to using the following code to pull a list of Experience objects from a MySQL table. Each ... better solution to my problem? 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 Jackson to (De)-serialize a Scala Case Class

I tested out the serialization of a Scala case class using Jackson. DeserializeTest.java public static void ... serialize Scala case classes? 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 communicate between views in Eclipse RCP?

In Eclipse RCP, I am creating views for the Perspective using IPageLayout.addView(...) But this way I don't ... the best pattern to use 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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java - Why does Hashtable not take null key?

Why does Hashtable not take a null key? Also why does HashMap allow null keys? What is the purpose of ... classes Key behaviour so different? 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 implement basic Spring security (session management) for Single Page AngularJS application

I am currently building a single page AngularJS application which communicates via REST to a backend. The structure is ... ). 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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java - Why is Jar Bundler gone in Mac OS X Mountain Lion 10.8.2

There was a application from Apple called Jar Bundler which got distributed by Apple with Xcode in the past. The ... but thats not the question. 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 transition from managedQuery to LoaderManager/CursorLoader?

I'm developing an Android application that is targeting API level 8 (2.2, Froyo). I'm using a ... CursorLoader is supposed to do)? 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 properly call Akka HTTP client for multiple (10k - 100k) requests?

I'm trying to write a tool for batch data upload using Akka HTTP 2.0-M2. But I'm facing akka.stream. ... of 10 000 - 100 000 requests. 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 - Is it possible to extend WebMvcConfigurationSupport and use WebMvcAutoConfiguration?

I need to extend the WebMvcConfigurationSupport class too modify two things: @Configuration public class WebConfig ... 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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