Java
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How to use private Java classes for effective API design
I am writing my first "API jar", which will be an open source library and used by (possibly) other developers I read J…… -
Set the “user agent” parameter for urlconnection to query Google from Java applications
I tried to get the results from the Java query as follows: String urlquery = "https://www.google.com/search?hl=en&…… -
Java – replaceall boundaries and exceptions
I'm trying to use replaceall to eliminate all spaces in the string, except two areas If my string is AB CD #E F# #…… -
Are there any problems when the project has different versions of the java compiler?
I have an eclipse workspace with several Java projects (in Maven); These are interdependent Recently, I started to cha…… -
Java: a neat mysterious veil
I have a list of filled integers: List collection = new ArrayList(); collection.add(this.score1); collection.add(this.…… -
Java – sort a two-dimensional array based on a row of data
I'm not sure whether the title correctly indicates the question I want to ask Suppose I have a two-dimensional int arr…… -
Java – Hibernate: two onetomany attributes mapped by the same entity with different columns
I know this can be easily solved through HQL query, but I prefer hibernate to handle some onetomany attributes for me …… -
How do I distinguish between two pending change lists in perforce?
I have several similar pending change lists, based on the top of the code branch and the same workspace in perforce I …… -
Java – MVC architecture for working with servlets
So, yes, that's my understanding >Servlet is just an intermediary, which is responsible for finding out the meaning…… -
Java – no suitable driver Try using hibernate to connect to the PostgreSQL database on heroku
I'm sorry to bother you, but I've been receiving errors. I don't understand why As specified in the title, I'm trying …… -
Java – how does null work in this code?
See English answers > method overloading and choosing the most specific type 9 class Test1{ public void doStuff…… -
Java – need ideas on how to insert small text phrases on the panel
I tried to insert the "puzzle game" text circled in red in the attached image I have put all four blue buttons and tex…… -
Java – ArrayList of arrays, how to make the size of the last array different from other arrays in the list
Explain what I want to achieve: I get a file. I have to read data from the file and create a block with a size of 1 KB…… -
Java – does a lot of annotated code affect the size of class files?
I have a code that I no longer need This is about 1000 lines So I just want to know if keeping this code in my java fi…… -
Java – why do you always get nosuchmethoderror on locationawarelogger when running jetty?
I'm trying to embed jetty server into my automated test, so I added the following dependencies to my project: <depe…… -
Java – calendar gettime() returns only est
Calendar cl = Calendar.getInstance(TimeZone.getTimeZone("America/Los_Angeles")); Calendar cl = Calendar.getInstance(…… -
Java – Android – hidden but selectable EditText
I want to see an EditText in my android app that you can't see, but you can select and enter text In other words, I ho…… -
JavaFX table columns have different fonts from CSS
I want to set different fonts (actually just italics) in a column of the JavaFX table col.setCellFactory(TextFieldTabl…… -
Sonarqube and Java plug-ins are installed, and there are no rules under the quality configuration file
I have installed sonarqube 3.7.0 for it 3 and all related Java plug-ins Under the quality profile tab, I can't find an…… -
jpa – java. Lang. illegalargumentexception: you tried to set a parameter value with a string name that does not exist in the query string
I have the following named query: @ h_ 502_ 7@ @NamedQuery( name = "Userdetails.findByUsername",query = "SELECT u …… -
Java – the Eclipse Plug-in cannot find a class from the class folder
I am developing an eclipse plug-in and want to use some pre compiled classes. I have put these classes in the Lib / fo…… -
Java – does not work in Tomcat 7
I see the answer to this and suggest adding < absolute ordering > I'm using Tomcat 7.0 29 and some filters are d…… -
Java: why can’t my variables be passed to the constructors available to my methods?
So I declared some variables in main and created a new object; Pass a variable as a parameter to the constructor Now, …… -
Java – inversion of return value
I have a flag that I want to pass to a function that returns true or false according to the value in the map: // userL…… -
Java prints a string containing multiple integers
Just started learning Java, it seems that I can't figure this out I'm learning learnjaonline Org, which teaches you so…… -
Java – constructor parameter parsing
I recently started working on version 3.2 I try to understand constructor parameter parsing in case dependencies are p…… -
Java – draw a Christmas tree with “X”
I'm trying some online exercises in Java I have done a lot of exercises, but if n = 4, I will stick to an exercise tha…… -
CouchDB last SEQ change feed
I think I made a mistake here. Maybe someone can clarify I have an application that polls CouchDB for a long time (thr…… -
How to create restful web services for JSON data in Java, Tomcat and eclipse
I have a JSON data like this I want to create a restful web service that generates a JSON output, just like the link a…… -
java – Android – Webview Progressbar
I added a progress bar to WebView I want to have progress bar coverage on WebView. I want to display the percentage of…… -
Java – use variables / expressions in comments (in the thymeleaf template)
I need to add some information about the generation to the page </html> <!-- page [[${pageCode}]] was generat…… -
Failed to delete duplicates in array using ArrayList
I want to remove duplicates from the array by using the array list The code seems to work in all cases unless the stri……