java

问题 I'm trying the run an Apache Beam pipeline in a Spring Boot project on Google Data Flow, but I keep having this error Failed to construct instance from factory method DataflowRunner#fromOptions(interfaceorg.apache.beam.sdk.options.PipelineOptions The example I'm trying to run is a basic word count provided by the official documentation, https://beam.apache.org/get-started/wordcount-example/ . The problem is that this example is using different classes for each example, and each example has

问题 I've been getting error 403 - Requests from this Android client application are blocked using paid Google Cloud Platform Translation API. Works great when restrictions are set to none. There are a few threads around reporting similar issue, but none answered. I've seen in some examples, there's a version which had .setApplicationName(), I think that might help, but I can't find which version would that be. Code used is:` private void translate(String textToTranslate, String targetLanguage,

问题 I want to do the following : Read numbers into a stack; Read out numbers from stack one by one; Find square root for each number and print result //need a stack class import java.util.Iterator; import java.util.Stack; import java.io.*; import java.util.*; import java.lang.Math; public class Root { public static void main (String[] args) { Scanner inscan = new Scanner(System.in); PrintWriter out = new PrintWriter(System.out); Stack<Integer> stk = new Stack<Integer>(); //Iterator iterate = stk

问题 I want to do the following : Read numbers into a stack; Read out numbers from stack one by one; Find square root for each number and print result //need a stack class import java.util.Iterator; import java.util.Stack; import java.io.*; import java.util.*; import java.lang.Math; public class Root { public static void main (String[] args) { Scanner inscan = new Scanner(System.in); PrintWriter out = new PrintWriter(System.out); Stack<Integer> stk = new Stack<Integer>(); //Iterator iterate = stk

问题 Using JUnit 4.12 and AndroidStudio I am trying to test below method Where results seems to be matching I don't know why as a reesult I am getting java.lang.AssertionError Method under test: public String dateNow() { SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy_hh-mm-ss"); String date = sdf.format(new Date()); return date; } My test class : private Addons mAddons; @Before public void setUp() throws Exception{ mAddons = new Addons(); } @Test public void testDateNow() throws Exception

问题 I've got a student studying for the AP CS test (he takes it next week). I was hired mid/end year to basically be a long term sub for the rest of the school year for these IT classes. I don't know enough about java or programming to explain to him why the answer to this practice test problem is B and not A (according to the answer sheet). I'm hoping this might be a decent place to get an explanation I can take to him... /** Precondition: arr contains only positive values. */ public static void

问题 So in the Data transfer Object there should be only setters and getters.. However what about handling also inserting and deleting objects from the Data transfer Object? public class dto{ setters and getters... .. .. public void delete(){ CustomreDao.delete(this.ID); } } Would it be against the DAO pattern itself? Thanks in advance. 回答1: Ask yourself this: "how hard would it be to update the DAO's delete method?" If you have a lot of DTOs and suddenly need to change the DAO, then that's a lot

问题 Scenario: I want to develop an application.The application should be able to connect to my remote server and download data to the local disk , while downloading it should check for new files and only download the new ones simultaneously creating the required(new) folders. Problem: I have no idea how to compare the files in the server with the ones in the local disk.How to download only the new files from the server to the local disk? What am thinking?: I want to sync the files in the local

问题 I have a java application that uses a JFrame as well as a TrayIcon and I added a PopupMenu to the TrayIcon . When I click on the TrayIcon the popup menu shows up, but the main frame freezes as long as the PopupMenu is visible. My first thought was that the event dispatch thread is occupied by someone. So I wrote a small example application that uses a swing worker and a progress bar. public class TrayIconTest { public static void main(String[] args) throws AWTException { JFrame frame = new

问题 Scenario: I want to develop an application.The application should be able to connect to my remote server and download data to the local disk , while downloading it should check for new files and only download the new ones simultaneously creating the required(new) folders. Problem: I have no idea how to compare the files in the server with the ones in the local disk.How to download only the new files from the server to the local disk? What am thinking?: I want to sync the files in the local