Recent Posts
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The best sorting algorithm of Java – burrows Wheeler transformation (BWT)
Burrows Wheeler transformation got me into some problems This is a university project, but it is only a small part of …… -
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 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 – 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# #…… -
Java – rotate the image in the override paintcomponent (…) method
I just want to know how to use the paintcomponent () method of jlabel component to rotate the rectangular image and se…… -
How to write ORM statements to return filtered data from data objects?
well. I've just started using orm in the ColdFusion application It has been going well until now I encountered this ob…… -
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…… -
How do I get a source object from documentlistener (documentevent)?
See English answers > how to find source component that generated a documentevent public void removeUpdate( Documen…… -
Java – jtextfield listener when modifying textfield text
I know how to add a text listener on jtextfield, trigger when the text changes, and modify the text of jtextfield duri…… -
Java – get question mark when inserting Hebrew characters into MySQL table
I am using NetBeans, using java to build web applications, and JSP uses Hebrew fields to process databases DDL is as f…… -
Java – add graphics to JFrame using borderlayout
I'm trying to do a simple job where I display a line of text to show whether the door object is open Below it, I visua…… -
How to confirm a message in message driven beans
In the JMS document, I read that message driven beans do not support client_ Acknowledge mode, only supports dups_ OK_…… -
Java – center jlabel in jpanels
I'm making a score retention plan, but I have a problem What I'm trying to do is have a JPanel containing two jpanels …… -
Java – how do I extend the margins of the eclipse source formatter?
Whenever I use source > to format in eclipse, it contains lines starting at line 80 But my program has many long li…… -
Java – Google common cache – the default value of maximumsize (and other “optional” settings) – you want a cache that uses all “available” memory
I just found guava through the search cache API (it's perfect for my needs) In my opinion, a good default value for ma…… -
Java – Test merge in merge sort
Is there any edge condition or general condition that I need to test this function The only thing I can think of is th…… -
Java – use select where where Mysql to be case sensitive in MySQL
Hi, I'm using java front end and MySQL backend, Actually in TBL_ Test contains name value --------------- abc 22 …… -
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 – 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…… -
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&…… -
Socket programming between Java and TCL
I have to write a program for a scenario in which a java program will communicate with a TCL program using socket prog…… -
Using mailto in Java?
I want to set up a hyperlink in my eclipse java project Solution Yes, you can use desktop mail() Desktop desktop = Des…… -
Java – do not update the fxml file in eclipse
When I use JavaFX, I encounter a strange behavior in eclipse. When I modify the fxml document in scenebuilder, I save …… -
Java: match regex and replace each character
I have a string, for example: There exists a word *random*. Random will be a random word How to replace each random ch…… -
How do I convert strings to operators in Java?
See English answers > is it possible to pass arithmetic operators to a method in Java? 8 import java.io.*; import j…… -
Java – “equality test with Boolean text” – test the difference between Boolean values and usage==
See English answers > Boolean checking in the 'if' condition 10 For this Code: boolean valid; if(valid == true) You…… -
Java – JPA subclasses referenced by multiple different parent classes
I encountered the following ORM problems: I have two grades A and B, and they all have a group of grades C: class A { …… -
Java – how do I implement boxing and unpacking in my own classes?
There is no operator override like I C in Java, so I can't figure out how to box / unpack my own class For example, wh…… -
Java – jsessionid is set for httponly and secure
We have a Tomcat instance that serves HTTP through SSL nginx proxy We set the connector settings as follows: connectio…… -
Java – Android custom view can only call OnDraw once
I made a custom view, which should animate the points on the background according to some external data (like the char…… -
Java array efficiency
I am not 100% sure that the mechanism is in action, so I decided to publish it here for further clarification I'm work…… -
Java – ant build in eclipse failed
After Google search, I used ant to build the jar file of my project and found out how I did it. I mentioned this ink H……