包含标签：Java 的文章
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Hexadecimal enumeration types use java to return wrong values?
I use the following enumeration types in the following code: public static enum PanelType { PAS8((byte)0xA6),PAS83…… -
Concurrent modification exception in Java
See English answers > repeating through a collection, avoiding concurrent modificationexception when removing objec…… -
Java – why can’t the content of my JFrame be displayed correctly?
In order to reduce the code, I am taking out the code irrelevant to the problem, such as addactionlistener(); wait My …… -
Java – change classes and objects (other aproachs?)
I have several situations that I want to do This may be an example: Consider the possible implementation of the chess …… -
Multiple classes and main methods in Java, as well as packages and namespaces
In eclipse The java file name must be the same as the class name Is this true in any case or only in eclipse? For the …… -
Java – GUI does not display as expected
I tried to draw the GUI as shown in the figure, but somehow I couldn't put the object in the correct position (I guess…… -
Java – about the close method used to close the flow ()
Today, when I'm working on some kind of servlet, I'm using the following code to perform a write operation. These serv…… -
Java – defaulttablemodel makes cells non editable JTable
See English answers > how to make a JTable non editable JTable table = new JTable(...){ public boolean isCellEd…… -
Replace dash characters in Java strings
See English answers > java string replace not working 6 str.replace("\u2014",""); Can you help me? Solution String …… -
Java class fields by reference?
I created the following tests to understand how Java handles objects, which puzzled me public class MyClass { publ…… -
Clientprotocolexception when attempting to submit a request to soap wsdlrequest through Java setting user name and password
My goal is to create a soap UI project with a given WSDL URL, save it and send all requests through Java methods I rec…… -
Limit threads and Java concurrency
I can't find an example of this particular case using the latest Java Concurrent routines I plan to use threads to pro…… -
Java – how to convert HTML to 2D arrays
Let me say I copy a complete HTML table (when each TR and TD has additional attributes) For example, for this table: &…… -
Java – no database selected when retrieving from MySQL website
I have a MySQL database and I try to retrieve it from our website host (GoDaddy) I followed a seemingly correct format…… -
Java: how to communicate with multiple clients in a single thread
I have a list of sockets belonging to a single thread But I wonder if there is a feasible way to communicate (read / w…… -
Java – concurrent HashMap document description
Concurrent HashMap is fully interoperable with hashtable in programs that depend on its thread safety but not on its s…… -
Syntax sorting in Java
The following two syntax sequences are valid in Java Why are both allowed and is there a preferred syntax order? priva…… -
Date in constructor in Java
I have a constructor class: ... Date d1; Date d2; public DateClass(Date d1,Date d2) { this.d1 = d1; this.d2 = d2…… -
Java – disable the open button in Jfilechooser?
I extended a Jfilechooser and overridden the approveselection method so that when the user selects an invalid director…… -
Java – why do you actually need war files in Tomcat?
Why not put the files in a subdirectory under the webapps directory? Solution Using war files has no performance advan…… -
Java – what happens to the returned object when I call “new object()” without storing the return?
Suppose we have some code as follows (I know this is a bad practice): try { new myObject(); } catch { //stuff } Wh…… -
Java – JFrame has the same shape as image / program running in the background
My problem is very simple, the solution is definitely not I am looking for a way to shape a JFrame, just like the imag…… -
Java – spring security oauth2 client
I have set up an oauth2 server with spring security I want to write a client application to use this OAuth server with…… -
Implementing binarytree in Java
I have this code for binarytree creation and traversal class Node { Integer data; Node left; Node right; …… -
Output of expressions in Java (– I)
int i=9; int i=9; System.out.println(--i + ++i); But according to the association and priority rules in Java, I should…… -
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Java – is it possible to trigger JButton events through method calls – rather than JButton clicks?
Can events be triggered through method calls? (and click) import java.awt.event.*; import javax.swing.*; public class…… -
Using generic classes and generic methods in Java is difficult
Java novice, I did search some examples, but I'm really sad I have a node class that uses generics: public class Node&…… -
Dropwizard / Jersey returns the Java list as JSON without a root node
I'm using the dropwizard using plain knit fabric for Jason My problem is that when I return a list, it does not specif…… -
Correcting Java program code snippets
I'm a beginner. I learn Java and modify my exam by answering the questions in the past exam papers. There's another qu…… -
Java regex – how to replace patterns or how to replace patterns
I have a pile of HTML files In these files, I need to correct the SRC attribute of the IMG tag <img alt="" src="./S…… -
VHDL std_ logic_ Vector index and “downto”
I want to set STD separately_ logic_ Vector to easily annotate individual bits or groups of bits This is what I have: ……