Recent questions tagged Java

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java - What are some strategies to unit test a scheduler?

This post started out as "What are some common patterns in unit testing multi-threaded code ?", but I ... according to the schedule specified ? 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 - Convert number in textview to int

So, I am messing around with java/android programming and right now I am trying to make a really basic ... more of my code if necessary 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 - Implement a function to check if a string/byte array follows utf-8 format

I am trying to solve this interview question. After given clearly definition of UTF-8 format. ex: 1-byte : ... the question. Thanks a lot. 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 native interface - JNI: Create HashMap

How do I create a HashMap object in JNI? 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 - Reading properties from tomcat

What is the best practice for reading config file(s) for your application. Which folders in tomcat server are " ... deployed (at what location) 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 JVM finds method (parameter with the closest matching) to call in case of function overloading

The JVM decides which overloaded method to call at compile time. I have one example: public class MainClass{ ... difference for short and int? 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 calculate the number of years difference between 2 dates?

How do I calculate the number of years difference between 2 calendars in 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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java - What's design pattern does Collections.sort use?

When applying a comparator to a list in the following manner, what is the design pattern being used or what is the ... item2.getId()); } }); 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 - ProGuard breaks JavaFX application

I'm trying to obfuscate my JavaFX application but it fails. The generated result does not work and I do not ... you will help me anyway :) 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 - protected/public Inner Classes

Can someone please explain to me what is the difference between protected / public Inner classes? I know that ... protected or public. 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 - Obtaining raw request body in JAX-RS resource method

How can I access the raw request body from a JAX-RS resource method, as java.io.InputStream or byte[]? I want the ... . I am using Jersey 1.11. 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 handle internal calls on Spring/EJB/Mockito... proxies?

As you many know when you proxy an object, like when you create a bean with transactional attributes for Spring/ ... above? (please share 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 - How to hide endpoints from Swagger documentation with Springfox

I have a Spring Boot project with next dependency of Springfox: <dependency> <groupId>io.springfox</groupId> <artifactId> ... ) .build(); } } See Question&Answers more detail:os...

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

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189 views

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java - Connect to SQL Server from Linux via JDBC using integratedSecurity (Windows authentication)?

Hey I am having trouble connecting to an SQL Server with Java code that is running on Linux. If I ... get integratedSecurity working on Linux? 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 closing the resources always important?

Many times I met the statement that the application should always explicitly close all the resources that it opened. ... of not doing 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 - How to disable Spring autowiring for a certain bean?

There are some class in jar (external library), that uses Spring internally. So library class has structure like ... for a certain bean? See Question&Answers more detail:os...

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

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182 views

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java - Spring @Transaction not starting transactions

I am using Spring 3 with Hibernate 3. I am trying to configure Spring declarative transaction, but no matter what I try, ... as context-param in web.xml. One of the file is...

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

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java - Maven: adding a reference to a parent pom project

I'm not sure if I'm understanding how to use a parent pom project correctly. I have the following parent ... find out how this is accomplished. 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 I get a negative elapsed time using System.nanoTime()?

I'm trying to use following code with System.nanoTime() to measure the elapsed time of code. public static void ... xp sp3, java: jdk1.6u27) 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 this static final variable in a singleton thread-safe?

Reading this site, I've found this: [The] line private static final Foo INSTANCE = new Foo(); is only ... final? Or for some other 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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java - JNI FindClass format for subclasses?

What is the correct FindClass identifier syntax to load subclasses? For example: package a.b.c; class ... syntax for representing subclasses? See Question&Answers more detail:os...

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

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228 views

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java - Combining Google proto buffers with Jersey/JAX-RS

Currently I have a RESTful web service with endpoints that are exposed via Jersey/JAX-RS: @Path("/widgets") ... might this code look like? 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 - iText 5.0.0 where did RTF and HTML go?

This question may seem stupid, but, so be it! I have a stupid problem then :-). Well, my problem is ... everything. Any hints on the matter? See Question&Answers more detail:os...

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

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447 views

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java - How to android unit test and mock a static method

Hi I really hope you can help me, I feel like I've been pulling my hair out for days. I'm trying to ... help would be so very much appreciated. See Question&Answers more detail:os...

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

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223 views

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java - command "mvn package" fails with status 137

Packaging GWT project using "mvn package" fails and I have the following ouput: [INFO] Scanning for projects... [ ... you very much 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 - Loading large images without OutOfMemoryError

I have a 5000 x 4000 px image which I want to draw onto a canvas. First I tried to load it from ... only solution is to downsample the image. See Question&Answers more detail:os...

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

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373 views

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java - Apache Commons IO Tailer example

I am working on a monitoring program that reads the /var/log/auth.log file. I am using Apache Commons IO Tailer ... What am I doing wrong 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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355 views

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java - Enable and disable all breakpoints in eclipse

Is there a way to enable and disable all breakpoints in Eclipse...? I dont want to remove them just disable ... is met. 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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