Recent questions tagged JAVA

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java - Difference between Collections.sort(list) and list.sort(Comparator)

Is there any reason why I should prefer Collections.sort(list) method over simply calling the list.sort()? ... use Collections.sort. Why? 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 - Fatal crash: Focus search returned a view that wasn't able to take focus

My application keeps crashing when I type something in a EditText, but this does not happen always only in some ... android:inputType="text" /> 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 - Redefinition failed with error 62 while trying to profile an application

If I try to profile application, (which is prepared under Eclipse, but running from command line) with the ... located where they should 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 to do I locate a Google SpreadSheet ID?

https://developers.google.com/apps-script/guides/rest/api#parameter_and_return_types When using the Google Execution Api for ... " : "notFound" 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 an Action class be scoped to Singleton?

My question is not only if action classes can be scoped to singleton, but I also want to know which are ... session), for controller and model. See Question&Answers more detail:os...

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

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199 views

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java - how to get Hash table Arraylist to other intent?

I have hashtbles in array list. List<Hashtable<String, String>> info = new ArrayList<Hashtable<String, String>>() ... class/intent? Thank You... 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 can I get HttpServletRequest from ServletContext?

Is it possible to get HttpServletRequest from the ServletContext? 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 - GlassFish JDBC Realm Group Membership

I have been busy setting up authentication, a JDBC realm in particular, on GlassFish 3.1. I have been ... "Group" table altogether? 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 - JSON parsing problem

i am trying to Json parsing in my android app the link is https://www.buzzador.com/apps/present_software/ ... exception e.printStackTrace(); } 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 Process.waitFor() never return?

I am launching a windows process (wrote in C++ but I don't have sources) from Java code in the following way: ... at the origin of the issue ? See Question&Answers more detail:os...

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

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276 views

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java - ListView row buttons: How do I create a custom Adapter that connects a View.OnClickListener to a button on each row of a ListView?

I want my ListView to contain buttons, but setting the button's xml property, onClick="myFunction" and then ... myFunction" /> </LinearLayout> 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 - Android Bug? : String.substring(5).replace(“”, “”) // empty string

Here is my code: String str = "just_a_string"; System.out.println("]" + str + "["); System.out.println("]" + ... .concat(str).concat(" "); } } See Question&Answers more detail:os...

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

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300 views

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java - Redirecting to another action with unknown amount of parameters in Struts 2

I have a login action which after successful execution redirects to the previous page (I store the ... suppressEmptyParameters">true</param> See Question&Answers more detail:os...

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

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251 views

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java - Log4J2 appender not logging to ThreadContext folder

I have the following Log4J2 configuration XML: <Routing name="myAppender"> <Routes pattern="$${ctx:workId}"> < ... Log4j2? Thanks for any 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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161 views

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java - Apache Spark taking 5 to 6 minutes for simple count of 1 billon rows from Cassandra

I am using the Spark Cassandra connector. It take 5-6 minutes for fetch data from Cassandra table. In Spark I have ... Count"+empRDD.count()); } 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 - HttpClient.execute(HttpPost) on Android 4.2 error

I am following this website http://givemepass.blogspot.hk/2011/12/http-server.html to try to use the ... returned String "Network 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 - Problem in instance variable initialization

Heres some sample code, class Base { private int val; Base() { val = lookup(); } public int lookup() ... initialized when its method is called? See Question&Answers more detail:os...

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

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291 views

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java - Android multi language support without localization

Hi I'm working on a android project. I want to provide multiple language support for the applciation. I ... this with multiple value files? 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 - Useful example with super and obscurity with extends in Generics?

I know that there are a lot of questions about this topic, but unfortunately they couldn't help me to eliminate ... with super) in this example? See Question&Answers more detail:os...

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

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153 views

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java - switching JTextFields by pressing Enter key

I have created number of text fields and I'm wonder how can I switch the focus between the fields by pressing the ... be change to field C ? See Question&Answers more detail:os...

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

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140 views

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java - Selecting A combination of minimum cost

I have data of different items in a different restaurants Rest Item Price ---------------------- ABC dosa ... ,Integer> menu; //item,price map } See Question&Answers more detail:os...

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

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229 views

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java - External AsyncTask class with ProgressDialog [Update: and returning back?]

**Updated: (See below)**I have been looking around for couple of days and can't find a straight answer to ... do to tackle this problem? 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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302 views

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java - Most robust way to fetch album art in Android

Please note that I have already been through similar questions and their answers here and on other websites. I ... } Thanks in advance, Ananth See Question&Answers more detail:os...

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

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335 views

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java - Load image to ImageView JavaFX

I would like to display image(saved in project folder) in dialog window, but when I run my method ... ; dialogStage.show(); } See Question&Answers more detail:os...

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

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138 views

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java - Geocoder doesn't always return a value

I am able to successfully get lat/long and pass it to the geocoder to get an Address. However, I don't ... zipcode,Toast.LENGTH_SHORT).show(); } See Question&Answers more detail:os...

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

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404 views

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java - How to set limit to the number of concurrent request in servlet?

I got this servlet which return a pdf file to the client web browser. We do not want to risk any chance ... raise a problem of race condition. See Question&Answers more detail:os...

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

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200 views

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java - Does IntelliJ support any kind of templating to create multiple files automatically?

So I have a spring mvc application, and I am noticing there is allot of repetitive code I am doing (I'm ... files (in the correct folders)? See Question&Answers more detail:os...

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

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951 views

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java - Hibernate Many to one updating foreign key to null

I am trying to get my @OneToMany and @ManyToOne relationships correct. Class 1: @Entity public class IdeaProfile { ... null? 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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