Recent questions tagged Java

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java - How to make 'simple SSL' thru Web Services?

I know how to secure Web Services using certificates. that's my client code: SSLContext ssl = SSLContext.getInstance ... thru HTTPS in browser) 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 - Webdriver - HTTP authentication dialog

I have a very simple selenium-webdriver script. I would like to do HTTP authentication using webdriver. Script: ... ("username","password")) 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 - IllegalAccessError: Method is inaccessible to class

I've got very strange error, because it only happens after installing app from generated .apk. When I ... protected visibility it works fine. 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.servlet.* cannot be resolved to a type

I am running ubuntu 14.04 and eclipse Kepler (with java ee modules preloaded) , I am developing Dynamic Web App ... snapshot for my error page! 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 - Apache solr configuration with tomcat 6.0

Can you help me configuring Apache Solr using Tomcat and how to index in MS SQL database using Solr. What are ... to run Apache Solr in Tomcat. See Question&Answers more detail:os...

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

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535 views

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java - Path to file on a Mac: FileNotFoundException

I'm working on a mac and I'm trying to specify the path to a file on my desktop. I just did it like ... . How do I correctly specify the path? 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 - Add BufferedImage to PDFBox document

In my current project, I try to add a BufferedImage to a PDFBox document. More specificly, I use an image from a ... to what I am doing 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 - Routing template format for undertow

Is there any documentation about routing template format for undertow. I want to setup handlers like this: / or / ... *", handler2) 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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java - Comparing two strings with "==": when will it work?

Say you have three strings, String s1 = "string one"; String s2 = new String("string one"); String s3 = " ... Is this correct? Why or why not? 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 Thread.sleep() works internally

Let's say I have a thread T and it is holding one resource R. If I call Thread.sleep() on the current ... finishing the work will it release 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 - Excel spreadsheet like library in Swing (=improved JTable)

I'm searching for a free, open-source if possible, Java swing library that improves the existent JTable (which is ... display above the grid... 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 - can I run more than one JVM on my single PC?

Can I run more than one JVM? If yes then how can I find a particular class is loaded on which JVM? 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 - MapReduceBase and Mapper deprecated

public static class Map extends MapReduceBase implements Mapper MapReduceBase, Mapper and JobConf are deprecated in Hadoop ... -api-020x.html See Question&Answers more detail:os...

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

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274 views

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java - What happens if we override only hashCode() in a class and use it in a Set?

This may not be the real world scenario but just curious to know what happens, below is the code. I am creating a set of ... , b, b, A, a, 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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java - AnnotationException Referenced property not a (One|Many)ToOne

I tried to make one-to-one relationship. But I get error: AnnotationException Referenced property not a (One| ... Thanks in advance for 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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338 views

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java socket writeUTF() and readUTF()

I've been reading some Java socket code snippet and fonund out a fact that in socket communication, to ... explicitly seperating each segment? See Question&Answers more detail:os...

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

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483 views

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java - LibGDX - Get Swipe Up or swipe right etc.?

touch area http://imageshack.us/a/img836/2909/swipe1.png In the green area the user can swipe up, right, down, left. How ... (i) - 1; //... } 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 - GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)

I am very much new to the MOngoDB + Java Configuration. I am trying to achive the connection from ... .getCollectionNames(DBApiLayer.java:152) See Question&Answers more detail:os...

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

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285 views

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java - How does Spring MVC controller method parameter work?

I created a Spring MVC project using a template that is created from the STS and this is what is generated in ... can be passed to the method? 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 - What is wrong with my isPrime method?

This is my isPrime method: private static boolean isPrime(int num) { if (num % 2 == 0) return false; for ( ... . What is wrong with the method? See Question&Answers more detail:os...

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

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597 views

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java - How to include dependencies in WAR file?

I have a Dynamic Web Project in Eclipse which has a dependency to another Java project in my workspace. ... where my dependencies are included? See Question&Answers more detail:os...

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

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426 views

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java - Bundle JavaFX app with openjdk 11 + runtime

I've created a small HelloWorld Java app that relies on OpenJDK 11 and JavaFX. The app is packaged in a jar ... ) with OpenJDK 11 and JavaFX? 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 - How to run a NetBeans project in command prompt?

My professor asked us to create a Java program that would be able to run in command prompt but could also ... a beginner in Java programming. See Question&Answers more detail:os...

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

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265 views

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java - JUnit Exception Testing

Edit: Not JUnit 4 available at this time. Hi there, I have a question about "smart" exception testing with ... reduce the use of try/catch? See Question&Answers more detail:os...

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

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494 views

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java - Kafka Producer NetworkException and Timeout Exceptions

We are getting random NetworkExceptions and TimeoutExceptions in our production environment: Brokers: 3 Zookeepers: 3 ... be the reason? See Question&Answers more detail:os...

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

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339 views

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java - what is exception propagation?

What is exception propagation? I tried to Google it, but couldn't find satisfactory results. Preferably explain this in terms of Java. See Question&Answers more detail:os...

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

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260 views

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java - Two realms in same application with Spring Security?

We're building a web application that is available to both authenticated and anonymous users. If you decide not ... that have to be configured? See Question&Answers more detail:os...

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

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233 views

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java - Why do we wrap HttpServletRequest ? The api provides an HttpServletRequestWrapper but what do we gain from wrapping the request?

What is the purpose of wrapping an HttpServletRequest using an HttpServletRequestWrapper ? What benefits do we gain from doing 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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