Java
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Prevent runtime method overrides in Java
>Class a method X () I want to create a class lib that will extend the activity class and override the methods (and…… -
Java – Apache POI xlsx read, cell with # value – wrong unexpected cell type (5)
Can you solve this problem? I need to read each cell as a string value In this case, I use Apache POI lib And ways to …… -
How to evaluate a list in the Java equation of two objects
I have an ArrayList. I want to use the contains (thing o) method to check the equality of the two objects. I override …… -
Java for each loop
I'm working on a task when I accidentally make a mistake, but the code executes and provides the correct result I was …… -
JavaFX – setbuttoncell for combobox
I have a problem I can't solve I want to implement the progress bar into a combo box: public class JavaFXApplication4 …… -
The DB2 Java stored procedure call returned an error sqlcode = – 440, sqlstate = 42884
I am making a simple stored procedure call to DB2 Although it calls the stored procedure, it always returns this error…… -
Java – how to add a method to a source file without editing the source file?
I'm trying to add a method to the minecraft source file, but I have to figure out how to do it without actually editin…… -
Java – Guice generic provider (the provider itself is generic, not its bound class)
There are many online resources on how to use Guice provider to bind to generic classes, such as wiki entries like thi…… -
Java – is there any way to set the size of ArrayList after declaration?
For example, in a traditional array, I will declare an array like this: int array[]; Well, I'll initialize it later li…… -
Can a single core CPU achieve real concurrency?
"If you can feel the computer switching dozens of tasks every few milliseconds, you will certainly agree that the comp…… -
Java – unable to find or load the main class file
See English answers > could not find or load main class 16 I received this error message My VM parameters: looks li…… -
Java – eclipse RCP – add a listener immediately after creating the view
Greetings to stackovlowians, I am developing an eclipse RCP application and must add the selectionlistener to the Proj…… -
Java spring MVC: no mapping found for HTTP request with http
I had a problem setting up spring MVC... I have this project structure -SpringTest<br /> -Java Resources …… -
Java – Solr – fields with default values reset themselves if store = false
When I set a field to stored = false and give it a default value, I encountered a strange problem with Solr (4. X) To …… -
Java – list concurrentmodificationexception
I have the following code public void saveProjects(List<Project> proj) throws DatabaseException { for (Proje…… -
Java: get sample request XML from WSDL
Is there a way to get the sample request XML using WSDL (URL) alone? The following is WSDL: http://www.webservicemart.…… -
Java – which is better to assign attribute values in constructors or classes?
Are there any differences between instantiations of the following types? If not, what are the best practices? "In clas…… -
Split two points based on Java that do not include a single point
I have a string STR1 written in Java. I want to split it String str1 = "S1..R1..M1..D2..N3..S1.R1.M1.D2.N3.S1R1M1D2N3"…… -
Java – generate ECDSA signature using secp256r1 curve and sha256 algorithm – bouncycastle
I am trying to generate a signature using ECDSA with secp256r1 curve (P256) and sha256 algorithm for message hashing I…… -
Java – how do I call this class?
I have my main class to call a custom JFrame class called mainframe public class App { public static MainFrame mf; p…… -
How to automatically convert input characters to uppercase letters in Java
I'm using the scanner class to get input and want to convert the input to uppercase letters when displayed This is my …… -
Java – click the close x button to close the frame
I have got the answer through link1 and link2, but it doesn't help because frame.setVisible(false); The following exce…… -
Java – outofmemoryerror commented out from seemingly unrelated code blocks
Can anyone explain why the program throws an outofmemoryerror when the for loop is commented out? If it is uncommented…… -
Java – automatically connect to sleep interceptor
I'm extending hibernate Emptyinterceptor, in my implementation, I want to automatically connect to some services, but …… -
Java – on event dispatch thread – want to leave it
Suppose I have methods that are sometimes called on the event dispatch thread, and sometimes not Now suppose I want so…… -
Java – content resolver and “in” statement in “where” statement
I'm trying to get the cursor of the contact list based on therir ID I'm not sure how to use an "in" statement with an …… -
Java – redirect to another port, keeping all remaining ports
On the server (embedded jetty), I need to redirect to another port, leaving everything else unchanged, for example, re…… -
Java – what do I need to do to make liveconnect run again?
A few years ago, I wrote a Java Web start application in NetBeans, which performs a simple file upload task Over the y…… -
Java – access the shadowed variable in the local class
I'm new to Java, and I'm confused in the following example public class Test { int testOne(){ //member method …… -
Java – why is rt.jar not a classpath system attribute?
I use the system properties Java class. Path to find all jars and directories belonging to the classpath At the first …… -
Java – can I force GWT compilation without an entry point? (verify compatibility with GWT)
This question is related to this question, but not repeated My question is slightly different; I have a "utility modul…… -
Java – webtarget and thread safety
My understanding is that Jersey's webtargets are thread safe and can be called at the same time, but I have a concurre……