Recent questions tagged java

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java - how to convert rdd to list effectively without using collect function

We know that if we need to convert RDD to a list, then we should use collect(). but this function puts a ... someone has got a better approach. 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 - Remove entries from the list using iterator

I need to write a simple function that will delete all entries in the List that contains objects of ... .AbstractList$Itr.next(Unknown Source) 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 - Google Drive Android API - Invalid DriveId and Null ResourceId

I have been battling this code the whole day without luck. I started by following this code sample from Google. ... how? Thank you 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 - RecyclerView in Fragment - No Adapter Attached, Skipping Layout

I have an odd situation, I have an Activity hosting a TabLayout/Viewpager that populates data based on changes to ... (Uri uri); } } 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 - Message "org.openqa.selenium.InvalidSelectorException: invalid selector: Unable to locate an element with the XPath expression" using sendKeys

I am having trouble trying to upload a file using Selenium. I am not able to use the sendKeys() ... unknown error: cannot focus element 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 - Rendering Swing component smoothly every 500 millisecond

I am facing rendering problem when I call paintComponent() every 500 millisecond to show updated charts. I have ... using MyObject's info. 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 - BigQuery and OAuth2

I'm trying to access Google BigQuery using Service Account approach. My code is as follows: private static final ... com What am I missing? 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 - Block a URL in a WebView on Android

I want to block a link from loading within a Webview. Code public class WebMy extends Activity { private WebView ... with this code? 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 - Draw varying size rectangle with different orientation using rectangle 2D

I want to draw a rectangle in a java application. I have used rectangle2d to draw a rectangle. I need ... of the three rectangle orientations 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 - Hibernate HQL with interfaces

According to this section of the Hibernate documentation I should be able to query any java class in HQL ... Collection of type Transaction. 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 - Verify Firebase Token at Google App Engine

I am developing an Application at Google App Engine. I am using Cloud Endpoints for the communication ... Instance after Token verfication? 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 - JavaFX Pie Chart - Overlapping Labels & Missing Labels

I have a chart that looks like this: Labels E and A are overlapping and Label D is missing. Label F ... from overlapping and display label D? 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 inject mock into @Service that has @Transactional

I have any issue in my unit test where I have something along the lines of this. The mock injection get overridden ... { fooBar.doStuff(); } } 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 - When does a JPanel paint (or repaint) its child components?

I've got a JButton which is painted using a custom UI delegate (CustomButtonUI extends BasicButtonUI). The ... ://snipt.org/wnlli, 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 - Selenium web driver moveToElement (Actions) throwing error with marionette driver?

Getting following error in selenium tests POST /session/ee1b9201-dadc-7446-b753-0a418a230d30/moveto did not match a ... Webdriver 3.0.0-beta2 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 - Adding a JScrollPane to a JTable component

I am trying to add a JScrollPane to my JTable, but it doesn't seem to works. I have a JTable with 21 ... why the scrollbars aren't appearing. 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 - Application or activity takes time to load some times

I have created a startup activity from where I am calling another activity which has a view pager and shows some ... Any solution? 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 correctly remove an Object from ArrayList?

I'm trying to remove an object from an ArrayList. Each Item object has 3 attributes; 1. itemNum 2. info 3. ... index. Any help would be great. 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 capture images using LWUIt VIdeoComponent

I have tried using MediaComponent, but since it is now deprecated it wont be good moving forward. Also i was not ... and not playing a video. 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 - Copy PDF with Annotations using iText

We need to import existing multiple PDFs into a single new PDF. Part of codes work similar to the sample ... solution to keep those annotations? See Question&Answers more detail:os...

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

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183 views

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java - nesting JSF expression strings

I want to achieve this using dynamic parameters for value expressions: <h:dataTable value="#{someBean.someValue}" var=" ... } return null; } } 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 many Strings are created in memory?

Say I have this String expression String hi = "Tom" + "Brady" + "Goat" I know that the String pool " ... that is stored in the String pool? 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 - When changing the value of a variable in C, is a new primitive created or is the current primitive mutated?

I know that 'mutable' and 'immutable' are terms that should be used to describe the ability for objects to ... are correct/false. 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 - jce cannot authenticate the provider bc

I have developed an application in which I have used the Cryptography with the help of BountyCastle.jar. I ... from external lib folder. 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 - BoxLayout ignores setYAlighment

Here is a function: /** * Creates an instance of a JLabel with the given arguments * @param text The ... the setYAlignment part of my function? 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 - Adjusting GC Overhead Exceeded parameters

I need my Oracle Hotspot to throw an exception java.lang.OutOfMemoryError: GC overhead limit exceeded much sooner than ... to free the heap. 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 - Which is optimal?

Is declaring a variable inside a loop is good or declaring on the fly optimal in Java.Also is there any performance ... value is + value); } 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 - Manifest merger failed after import a module

Hi I am developing a sdk, and when I add these SDK into a app proyect I get the following error: Manifest merger ... } How can solve it? 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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