Recent questions tagged JAVA

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java - How to debug an application running in Docker with IntelliJ?

I have a Jetty application running in docker. I would like to debug this application using my local IntelliJ. ... suspend=n -Djava.compiler=NONE 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 - Running/Interpreting C on top of the JVM?

Is there a way to run plain c code on top of the JVM? Not connect via JNI, running, like you can ... over the JVM using ANTLR generated code? 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 - ImageIO reading slightly different RGB values than other methods

I've found that I'm getting different RGB when using Java (& actually paint.NET) than I am using ImageMagick, ... but I'm getting somewhere... 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 - The type javax.servlet.ServletContext and javax.servlet.ServletException cannot be resolved

I'm trying to include Spring Security to my web project, i'm following this tutorial http://docs.spring.io/ ... ! Using mvn clean install -U 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 - JodaTime - how to get current time in UTC

I want to get the current time in UTC. What I do so far is following (just for testing purposes): DateTime dt = ... Sat Jan 03 20:15:35 MEZ 2015 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 wait for a ThreadPoolExecutor to finish

My Question: How to execute a bunch of threaded objects on a ThreadPoolExecutor and wait for them all to finish before ... + " ended"); } } 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 - Loop through all elements in XML using NodeList

I want to loop through all elements in a piece of XML printing each one. My problem is that I keep ... city2 furvi 4655433 gmail3 area3 city3 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 is 'Push Approach' and 'Pull Approach' to parsing?

Under the push parsing approach, a push parser generates synchronous events as a document is parsed, and these ... beginner is 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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java - Foreach with JSONArray and JSONObject

I'm using org.json.simple.JSONArray and org.json.simple.JSONObject. I know that these two classes JSONArray ... to iterate through JSONArray? 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 is the difference between Observable and Flowable in RxJava 2.0?

Observable and Flowable interfaces seem to be identical. Why Flowable was introduced in RxJava 2.0? When ... use Flowable over Observable? 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 - Need Spring version# - only have spring.jar file

I've inherited an app that uses Spring. The original developers are not available. The Spring jar file is just ... track down the right version? 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 2.1 bean override vs. Primary

With Spring Boot 2.1 bean overriding is disabled by default, which is a good thing. However I do have some tests ... .mock(BService.class); } } 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 - DataInputStream deprecated readLine() method

I am on java 6. Using DataInputStream in = new DataInputStream(System.in); to read user input. When the ... the readLine() is deprecated. 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 file name using date and time

I hope you could help me, I'm trying to call in the date from another class and looks like "2011-03-09 06-57 ... (); }catch (IOException e){ } 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 - Statement.execute(sql) vs executeUpdate(sql) and executeQuery(sql)

I have a question related to this method: st.execute(sql); where st obviously is a Statement object. Directly ... a table. 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 won't the VisualVM Profiler profile my application?

I've created a simple 1 file java application that iterates through a loop, calls some functions, allocates some ... I launch my application? 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 call for a Maven goal within an Ant script?

Is it possible to call or execute a Maven goal within an Ant script? Say I have an ant target called ' ... ' goal from another pom.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 - Mockito verify no more interactions with any mock

In Mockito, is there a way to verify that there are no more interactions on any mock I have created? For example: ... } Is there such a 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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java - Automatically Add a Prefix to Column Names for @Embeddable Classes

I am developing a project in which I am persisting some POJOs by adding Hibernate annotations. One problem I ... other reasonable work-around? 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 - Kill all Gradle Daemons Regardless Version?

Summary I would like to know how to kill every single gradle daemon and process running on a machine ... Daemon Stopping an existing Daemon 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 send Multipart form data with restTemplate Spring-mvc

I am trying to upload a file with RestTemplate to Raspberry Pi with Jetty. On Pi there is a ... .support.StandardMultipartFile["inputStream"]) 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 get contents of a folder and put into an ArrayList

I want to use File f = new File("C:"); to make an ArrayList with the contents of the folder. I am not very ... = true){ } } } Thanks, obiedog 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 should I ever overload methods?

I found two examples in my book of overloading methods, but it doesn't explain clearly exactly why it's useful: ... easy to make new methods.) 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 DecimalFormat locale

I have custom DecimalFormat in Edittext's addTextChangedListener method, everything is working perfectly but when I change ... use this code. 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 keep class names?

Hello I am writing an Android app and I have set up Proguard to obfuscate my application. I however ... from obfuscating specific class names? 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 resolve the AnalysisException: resolved attribute(s) in Spark

val rdd = sc.parallelize(Seq(("vskp", Array(2.0, 1.0, 2.1, 5.4)),("hyd",Array(1.5 ... .spark.sql.AnalysisException: resolved attribute(s)id#426 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 - Removing range (tail) from a List

Is there an efficient method to remove a range - say the tail - of X elements from a List, e.g. ... best option, at least regarding semantics. 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 - The ad size and ad unit ID must be set before loadAd when set programmatically

I have no idea what is going on here but I am trying to set my ad unit ID dynamically through code like ... .build(); mAdView.loadAd(adRequest); See Question&Answers more detail:os...

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

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