Java
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Java – use icons with jcheckbox
I have a swing application that I want to use with icons JCheck@R_244_2419 @I constructed the following icons: JCheck@…… -
Java – how to read specific excel columns using Apache poi
I encountered an excel problem when using Apache poi I can read across lines, but sometimes I'm in a situation where I…… -
Java – Android – listview onitemclick() is not triggered in 4.1 jellybean
I have a user who only installs 4.1 (frozen beans), and listview onitemclick() stops working in my application Events …… -
sun. net. www.http. Httpclient has a memory leak in Tomcat 6
I'm using Tomcat 6.0 18. After Undeploying my application, httpclient seems to hold a reference to webappclassloader, …… -
The spring repository method that returns the Java 8 stream does not close the JDBC connection
I have a spring data repository: @Repository interface SomeRepository extends CrudRepository<Entity,Long> { …… -
Java – Apache camel example inserts a row into a table
I want to exchange Insert body into the database table to get one of my routing conditions >Are there any sample / …… -
Java – no body message is displayed when sending attachments
When I send an attachment, I can't see the body message in the email (message. Settext (this. Getemailbody());) MimeMe…… -
Java – Gmail also extracts messages from sent messages
I have the following code to connect to the inbox of the mail server: Store popStore = popSession.getStore("pop3"); po…… -
Save Java BitSet to DB
Using JPA, I want to be able to save BitSet to the database and pull it back to the program Suppose I have: @Entity @T…… -
Whether it is possible to have a common Java library module depends on the Android SDK in Android studio
In my multi - module Android studio project, I want to create a normal Java module But in this module, I also want to …… -
Java – do I need to use @ remote when I want to expose EJBs to different applications on the same application server?
I have a @ stateless @ local bean successfully deployed in my ear When I browse the JNDI tree, I can see the new EJB 3…… -
Java – lwjgl 3 get cursor position
How do I get the cursor position? I checked the glfw documentation, and there is a method glfwgetcursorpos (window, &a…… -
Java – format date in function
I tried to format the date in the function interface, but I don't know if it is possible SimpleDateFormat dt1 = new Si…… -
Change the color of the panel title in Java Swing
I am running swing application on win7 with 144 DPI flat panel monitor The titles of my frame, options pane, etc. are …… -
The Java – graphics2d conversion result does not match the manual conversion
I use Java's graphics2d to manipulate my drawing on a component using affinetransform Sometimes I need to manually ope…… -
Randomize text files read in Java
I try to read a text file in Java, which is basically a set of problems There are four choices and one answer The stru…… -
Java – use the abstract init() function in the constructor of the abstract class
I have something like this: public abstract class Menu { public Menu() { init(); } protected abs…… -
Converting images to 2 colors in Java
I want to use java to convert the image to 2 colors, black and white I am converting to grayscale using the following …… -
Java – JPA many to many connection table entity, compound key “null ID generated”
This is my entity: public class Account extends AbstractEntity<Long> { @Id @SequenceGenerator(name = "a…… -
Java – use the properties in the properties file
I apologize for the title I can't find a better way to explain the situation I use the property class to load property…… -
Java – the same string comparison gives me false
See English answers > How do I compare strings in Java? 23 String temp = ""+(num1*num2); Boolean equal = temp == an…… -
Why do you have to deal with () an out of range Java awt. Window？
One of the memory leaks I found in my application was Java awt. Window. All windows specific static field that tracks …… -
Java – Eclipse: import and export operations in the “save operation” option
You can import export cleanup settings as XML files in preferences - > java - > code style - > clean up I wan…… -
Properties in Java – can we use comma separated keys for individual values?
I want to provide multiple keys (> 1) for a single value in the properties file of my java application A simple way…… -
Java – how do I check if a string is a valid XML element name?
You know the functions in Java, which will verify that a string is a good XML element name Form W3Schools: I found tha…… -
Java – create meta-inf / services folder in eclipse
I tried to create an extensible application in Java and chose to use SPI According to this tutorial, I'm paying attent…… -
Java – how to delete / filter / ignore certain packages from Emma (code coverage)
I tried to delete some packages from my report and got into trouble Can someone help me? I use Emma in my ant process …… -
Java – why not more boring GC
Except Azul, all GCS I know are concurrent, but at least there are some small worldwide components Why isn't there mor…… -
How to call collections on a part of a Java array Shuffle
So I have the following array: String [] randomList = new String [16]; randomList[0]="Dog"; randomList[1]="Dog…… -
Java – use the properties in the properties file
I apologize for the title I can't find a better way to explain the situation I use the property class to load property…… -
Java – how do I change the background color of jooptionpane?
I've added joptionpane to my application, but I don't know how to change the background color to white@ H_ 301_ 2@`int…… -
Java – check user name and password in Android
I have a username and password field, now I need to check it and redirect it to the next page of Android public void o……