包含标签：Java 的文章
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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…… -
java. sql. Sqlexception: ora-06550: after calling the procedure from Java code
Hi, I have a problem calling stored procedures connection = ConnectionManager.getInstance().getConnection(dataBaseURL,…… -
Java – the fastest way to combine unique integers from 2 arrays
If I have 2 arrays: arr1 = {9,8} arr2 = {13,12,10,9,8} I want to get: {13,10} And the array is given: arr1 = {23,22,21…… -
Java – Android simpledateformat does not work
Quick questions, simpledateformat didn't perform as well as I expected I want to get a date string that looks like Thu…… -
Java – start Tomcat war
I installed Tomcat server on my computer I created a set of servlets in eclipse and exported them in war format When I…… -
The best way to wait in Java
I have an application that needs to wait for some time It must wait until the server fills in several data fields The …… -
Java – the concept of page path in JSP and Servlet
What's the difference between the two? In jsp: ${pageContext.request.contextPath} How do you achieve the same result w…… -
Java – truth table array
I always insist on how to start coding The first case will be: t T. after I have completed other calculations on this …… -
Upgrade from Java 1.4 to Java 6 se
I am currently upgrading from Java 1.4 to Java 6 se Some methods and classes have been deprecated or there have been n…… -
Java – how to make my program run outside eclipse
I have a solar eclipse project When I click the green circle play button in the IDE, it will do everything I want it t…… -
Java – BigDecimal and BigInteger and BigDecimal performance
I'm discussing whether to use BigDecimal and BigInteger or just BigDecimal to make my life easier and less back and fo…… -
Java – spring data: JPA schema jparepositoryconfigdefinitionparser initialization failed
I'm trying to set up a project about spring data, but I encountered a strange error like this: Handle problems with pr…… -
Java – why call JFrame Will pack () add extra space?
At first, the code I used worked well, but it was a little confusing After moving some parts of the method to the cons……