Java
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How to use the same add () method in two different classes
Is there any way you can use the same add () method between two different classes (add content to the array)? For exam…… -
Togglegroup using togglebuttons JavaFX
How to deselect all togglebuttons in the togglegroup in JavaFX? There seems to be no clearselection () function like t…… -
Java – bean validation: how to manually create a constraintviolation?
I have a specific scenario where I can only manually check violations later in the process What I want to do is throw …… -
Java – is delayed initialization using immutable data always thread safe?
I have two classes a and B: class A { private final String someData; private B b; public String getSomeDa…… -
Java – why are the best practices for static classes different in OOP?
I'm currently reading about Java best practices. I find that according to this book, we must support non static static…… -
Java – a better way to implement an empty while loop to maintain control
I'm playing the background audio. I want the control of the program to remain stationary until the audio playback is o…… -
Java – StringBuffer class and Chinese character encoding
I wrote a method to return a string containing Chinese characters public printChineseMenu(){ StringBuffer buffer; …… -
Java – hibernate does not create tables – spring MVC
I have a spring project and I'm using hibernation When I started the project, DB didn't change I tried the difrenf con…… -
Java – why does the swagger annotation generate API docs with a default path prefix
I use the Maven plug-in below to integrate swagger with my application I configured the following in my spring servlet…… -
Displacement differences in Java and C – how to reconcile
I have some code in C, I'm trying to migrate to Java, and there's a problem I can't solve@ H_ 301_ 7@ Solution C code …… -
Java – defaulttablemodel does not return the value in the datavector
My question is related to JTable and defaulttablemodel DefaultTableModel model=(DefaultTableModel)jTable1.getModel(); …… -
Why doesn’t Java seem to respect my classpath?
I have jt400 in my directory jar： /path /jt400.jar /Test.java Test. Java content: import java.sql.*; //impor…… -
Java – the scan count returns a number significantly less than the dynamodb table
I'm running a sample Java program to query the dynamodb table, which has about 90000 items, but when I get the scan co…… -
Java – find integer patterns in arrays
For this problem, I will write a method called mode, which returns the most common element in an integer array Suppose…… -
Java – requires multiple input from the user
I'm trying to write a program that keeps asking users for an integer until they enter a non integer value, and the pro…… -
Java – using action tabs and WebView
I want to have my application to display tabs at the top of the screen (make it work) and set up WebView. XML in the X…… -
Reading streams over HTTP networks using Java I / O
Now I'm trying to improve the performance of Java I / O I have some crazy questions about using Java I / O to read / w…… -
Java – smack 4 throws “sslhandshakeexception: validatorexception: suncertpathbuilderexception” on the connection
For the integration test of my XMPP stack, I set up a vysper server (0.7) on localhost Question: Caused by: javax.net.…… -
Java – is it a good habit to use atomicinteger as an alternative to variable integers?
I have the following situations: public void callMe() { AtomicInteger howManyOdds = new AtomicInteger(0); AtomicInte…… -
Mirrored shapes in Java (swing)
hello everyone, I have a lesson about drawing and manipulating shapes in swing GUI I have a problem. When I try to mir…… -
Is there an activity failure that occurs in concurrency in Java 8
I will try to reproduce the code mentioned in the following valid Java (Second Edition) public class StopThread { p…… -
Java – use drawLine to extend the graphics class (double, double, double, double)
Question: / / where the story begins You can see it's terrible Actual prototype: public abstract void drawLine (int x1…… -
java. Lang.exception: no certificate file specified or invalid file format
Through JBoss 5.1 1 while deploying, I encountered the following error: 2014-03-18 08:44:57,834 ERROR [org.apache.coyo…… -
Java – is there a way to compare two lists with streaming media?
I have a class named MyClass, which contains several members, one of which is mystring: public class MyClass{ //... …… -
JavaMail uses outlook in the company
I used JavaMail for the first time with some exceptions. I don't understand that I saw some mistakes in other question…… -
Java – intrinsic / monitor locking and inheritance
Background: I'm reading Java concurrency in practice. Listing 2.7 contains the following code This example indicates t…… -
Java – generics – method return type as extension class
I tried to do this in Java 6: abstract class CurrClass{ public <T extends CurrClass> T setField (String str)…… -
Java – generic methods do not recognize types correctly
I have a class whose members are defined as: Map<Class<? extends Model>,List<? extends Model>> mockS…… -
Java – serialize the object containing the ArrayList object
public class User implements Serializable{ public class User implements Serializable{ public String name; …… -
Java – how to add JButton to JScrollPane?
Hi, I want to make a desktop application here. I'm using JScrollPane I want to add a multipul button to the JScrollPan…… -
Multithreading – forces Perl programs to use threads to use all CPU capacity
I have a laptop equipped with Intel Core I3 CPU. I want to create a simple program in Perl to use 100% CPU capacity My……