Recent questions tagged java

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java - How do I load a resource and use its contents as a string in Spring

How can I load a Spring resource contents and use it to set a bean property or pass it as an argument ... ? The resource contains free text. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Update elements in a JSONObject

Lets say I gave a JSONObject { "person":{"name":"Sam", "surname":"ngonma"}, "car":{"make":"toyota", " ... .getString("name"); name = "Sammie"; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - SwipeRefreshLayout trigger programmatically

Is there any way to trigger the SwipeRefreshLayout programmatically? The animation should start and the onRefresh method ... should get called. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Is there a way to add query parameter to every request with Retrofit 2?

I need to add a query parameter to every request made by Retrofit 2.0.0-beta2 library. I found this ... = retrofit.create(userService.class); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What does EnumSet really mean?

I have the following example: import java.util.EnumSet; import java.util.Iterator; public class SizeSet { public ... to understand it better. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect)

I have a java project that runs on a webserver. I always hit this exception. I read some documentation ... locking failed; nested exception is See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How are nested capturing groups numbered in regular expressions?

Is there a defined behavior for how regular expressions should handle the capturing behavior of nested parentheses? ... different than etc.)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why can't I map integers to strings when streaming from an array?

This code works (taken in the Javadoc): List<Integer> numbers = Arrays.asList(1, 2, 3, 4); String ... ? And how to fix that ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Is there a Collector that collects to an order-preserving Set?

Collectors.toSet() does not preserve order. I could use Lists instead, but I want to indicate that the resulting ... what Set interface is for. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Converting from Integer, to BigInteger

I was wondering if there was any way to convert a variable of type Integer, to BigInteger. I tried ... error that says inconvertible type. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Converting BigDecimal to Integer

I have Hibernate method which returns me a BigDecimal. I have another API method to which I need to pass that ... there a way out of this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Eclipse compilation error: The hierarchy of the type 'Class name' is inconsistent

I have downloaded some open source software written in Java and tried to compile it using Eclipse. I got the error: " ... and how do I fix them? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Kotlin: Interface ... does not have constructors

I am converting some of my Java code to Kotlin and I do not quite understand how to instantiate interfaces ... how interfaces work in Kotlin? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How can I draw sound data from my wav file?

First off this is for homework or... project. I'm having trouble understanding the idea behind how to draw ... Any help is appreciated thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Video processing in Android

I'm using Android 2.2 with Eclipse. I would like to make an application that captures video, and for each frame, ... at to do such a thing? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Set up Netty with 2-way SSL Handskake (client and server certificate)

I am now trying to set up Netty with a 2 way SSL handshake, where both the client and server present and ... that takes care of the problem! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to increase maximum number of JVM threads (Linux 64bit)

I cannot create more than 32k Java threads in Linux machine with 15G memory. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to connect to a remote MySQL database via SSL using Play Framework?

I deploy Play applications in distributed environments, backed by a remote MySQL database. Specifically, the applications ... password="...." See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Saving ArrayList in SQLite database in Android

I've been working with SQLite on android and I would like to add an arraylist to a column in a table, and ... array of data, i should consider? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Quartz retry when failure

Let's say I have a trigger configured this way: <bean id="updateInsBBTrigger" class="org.springframework.scheduling. ... to work like this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How do I get the raw Android camera buffer in C using JNI?

I've been searching Google and StackOverflow exhaustively and cannot find this. Maybe I'm missing something obvious. ... ] is too inefficient.) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Using Cookies across Activities when using HttpClient

I'm trying a simple app to read in the HTML of a website, and tranform it to create an easily ... .system.NativeStart.main(Native Method)* See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - what to do with tomcat PermGen space

BACKGROUND: I have a web Project which uses JSP. The IDE is Eclipse. The configuration of tomcat is: ... Thread.run(Thread.java:662) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to deploy spring boot web application on tomcat server

I have created spring boot web application, but I am unable to deploy spring boot web application WAR file on ... > <packaging>war</packaging> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Using Google Analytics To Track Fragments

Just need to know the proper way to implement Google analytics to track when a user is on a fragment in ... help would be much appreciated! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to enable ProGuard obfuscation in Android Studio?

I have to protect my app by enabling Proguard obfuscation in Android Studio. I have searched ... -proguard eleaseclasses.jar See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Required Multiple beans of same type in Spring

A request before you mark it as duplicate. I have gone through the forum and couldn't find the solution for the ... true; } return false; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jetty Cross Origin Filter

I've configured Jetty's cross origin filter, but I continue to get the following error. Does anyone know what is ... :Jetty(7.5.4.v20111024) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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