包含标签：Java 的文章
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When specifying types, javac “uses unchecked or unsafe operations”
The following codes: public void addGrillaListener(Stage stageToClose,Grilla listener) { GrillaHandler<WindowEv…… -
Best practice – how do I test for strings in Java?
I render some data according to conditions Support method execution to check whether the string exists But I don't kno…… -
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 – force UI update
I have a piece of code to capture screen shots of nodes in JavaFX: public BufferedImage getSnapshot(final Node... hide…… -
Java – httpclient 403 error when using valid client certificate
I'm trying to automate some tasks on the website using Java I have a valid client for the website (works when I log in…… -
Java – the default character set (us-ascii) on heroku causes problems
We deployed a Java application based on Maven jetty on heroku Locals, when I do this: System.out.println("Default Char…… -
Java Swing RadioButton with variable, clickable icons
Design a question. The range of answers can be selected through RadioButtons Each mouse click can change the displayed…… -
How to use regular expressions in Java to validate strings
Here, I want to make regx for strings that contain only 0 to 6 numbers Example-1 : "010002030405" Valid String This st…… -
Java – dynamically change the icon of a specific node in JTree
I've seen many examples of changing node icons during tree instantiation, but I want a way to dynamically change the i…… -
Java – simpledateformat query
I have the following code snippet Date date=null; SimpleDateFormat sdf=new SimpleDateFormat("dd-MM-yyyy"); try…… -
Reply to a request through a queue using hazelcast
I wonder if I can ask for a reply: >1 hazelcast instance / member (central point) > 1 application that uses haze…… -
Java – how to use dynamic CSS in JSP files based on param values
I have a JSP file as follows: <html> <head> <script type="text/javascript"> var type=<…… -
Java – which pattern of using policy patterns can avoid duplicate code in concrete policies?
I am unfamiliar with design patterns. In the following example, I use what I think is the strategy pattern However, I …… -
Java – control structure used with 3 possible inputs (efficiency)
In my java program, I need a control structure that should provide three different results for three different inputs …… -
Retrieving information from LDAP (Java)
I'm trying to retrieve data from the LDAP server, but it failed (connection works) It's hard for me to understand what…… -
Java: AES encryption using CTR mode; Unable to decrypt
I'm using the following code, but it doesn't decrypt the text correctly. What I get is output Encryption:% no2f? ¢¶SHº…… -
Java – integrating SCORM in LMS
I developed a learning management system using Java I must import and access SCORM courses in my LMS I'm in SCORM COM,…… -
Add a new string to HashMap Java
I'm writing a program to read the log file and count the number of times some strings are displayed I tried to manuall…… -
Java selection: store images in jar or Base64 order?
I wrote a poker simulator / odds calculator On the GUI, there are some JCombo@R_271_2419 @The user can select the card……