Java
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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 nosuchmethodexception when getting constructor
I tried to use reflection to load instances of classes When I tried this, I got an exception without this method I'll …… -
Java – does hibernate / JPA consider transiant modifiers (not annotations)
I want to avoid serialization (in JMS / AMF), but still use JPA / hibernate to hold fields Is the transient modifier m…… -
Java – how to animate a gyro?
It's Hanukkah, and I'm trying to animate the Dreidel: I can make it rotate on its own axis This is my code: import sta…… -
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…… -
Do java – HQL queries always hit the database and get results?
I'm going through hibernate and when to use criteria vs HQL. My understanding is to use hibernate. Whenever we query t…… -
Java – resource folder in Android studio unit test
I have a gradle project with the following structure: project/ src/ androidTest/ java/ …… -
Java – get the absolute path of all files in a given folder
I need to save all the file names and absolute paths in a given directory in memory myDirectory. List () – retrieves o…… -
Can you make an unclosed and indivisible Java application?
Is there any way to ensure that users cannot close or leave my swing application? I tried to make it full screen, but …… -
Predicate based method of Java 8 stream indexof
See English answers > stream way to get index of first element matching Boolean int index = list.stream().indexOf(e…… -
java – Selenium – driver. Getpagesource () is different from the source viewed from the browser
I tried to use selenium to capture the source code from the specified HTML file, but I don't know why. I didn't get th…… -
Java – simple XML parsing from XML to list
I use simple XML (simple-xml-2.6.2. Jar) to parse XML files, such as: <?xml version="1.0" encoding="UTF-8" ?> &…… -
Open source Java reporting framework
I want to create several reports and select data from several SQL tables, so I don't create different reports. I want …… -
Java – declare and throw and throw without is declared exceptions
What is the difference between dual methods in Java? public void methodA() throws AnException { //do something …… -
Check whether the elements in the array are subclasses in Java
Let's assume that I want to check whether the values in the object array belong to a superclass or subclass. For examp…… -
Java – get an instance of class [runtime type token]
I created a preferences class. For getters, I don't want to use runtime type token So this is my getter method: public……