包含标签:Java 的文章
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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 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 – won’t Android studio let me use switches on strings?
I'm creating an Android Application in Android studio and trying to create a switch case on the string As far as I kno…… -
Java – why do I throw a NullPointerException
So it's a winter vacation for college, and I'm trying to be sharp in coding, so I just write the code of programs and …… -
How to calculate a good hash code for a large list of strings?
What is the best way to calculate a hash code based on the value of these strings in a pass? OK, I mean, it needs to: …… -
Java – tag interface
Can anyone explain the contract of marking interface in Java? For ex: if clonable is a tag interface without fields / …… -
Why is java safe compared to other programming languages?
Java vendors and communities say that "Java is more secure than other languages." But I want to know what? If we look …… -
Java – use jersey-spring3 to retrieve managed beans from the Jersey test container
This question is derived from the previous question specify custom application context We are using Jersey spring to b…… -
Key of string in Java RSA
I use RSA encryption in my application To store the generated public key, I convert it to a string and save it in the …… -
Java – how to execute unit tests using threads?
Executive Summary: when an assertion error is thrown in the thread, the unit test will not crash This makes sense beca…… -
Java – why the super class method?
class One { class One { public void doThing(One o) {System.out.println("One");} } class Two extends One{ public…… -
java – httpURLConnection vs apache commons http
I just want to know if you have any problems using the Java default httpurlconnection class A bug that lets you switch…… -
And Java util. stream. Stream processes two lists in parallel
For each element in each list, perform an action Elements can be processed in any order For example, in old Java: List…… -
Java – querydsl – case expression with string value
QueryDsl 3.3. four public class Document { private Confirmation confirmation; } public class Confirmation { .……