Java 归档 - Page 75 of 655

Java: how to make this serializable?

I need the following class to be serializable package helpers; public class XY implements Comparable<XY> { ……

Java

2020-09-02

Java – generic parameters for serializable collections

I have such members in a serializable class: private final Map<String,List<T>> categoryMap = Maps.newHashM……

Java

2020-09-02

Java – how do I get numbers? How many items have different names?

I have a list < custom > Where is custom class Custom { public int id; public String name; } How do I ge……

Java

2020-09-02

Java – spring using security: authentication principal in the link username

OK, this should be a simple one In the header In the JSP x file, I want a link to guide authenticated users to their u……

Java

2020-09-02

Java – buttons are not initially drawn

There is a problem with my applet. The buttons won't be drawn until you hover over them They stay after that, but once……

Java

2020-09-02

Java – how do I display jtextfield when I click an image?

So I'm trying to make this program that allows users to tag photos in Java (a bit like Facebook tags) I've finished lo……

Java

2020-09-02

Java – should the connectmanager really shut down?

Sometimes I get java.net.socketException: Too many open files java.net.socket.createImpl(Socket.java:397) java.net.s……

Java

2020-09-02

Java – calendar volume affects other calendars

I have a piece of code that I don't quite understand It caused a mistake There is a calendar object and a method to wr……

Java

2020-09-02

Exception in thread “main” Java lang.RuntimeException：Stub

Hey, guys, I got this strange mistake. I can't figure out why? package com.androidbook.services.httpget; import java.……

Java

2020-09-02

Java – reference to ArrayList element

I tried to get a reference to the ArrayList element, but I failed ArrayList<String> test = new ArrayList<Stri……

Java

2020-09-02

Java desktop notification Ubuntu

Ubuntu has desktop notifications at the bottom of the screen My question is how to use it in Java I can't find a solut……

Java

2020-09-02

Java – jsoup: Retrieves elements that do not contain specific attributes

I have a table with follow logic >Table display name list > for each row containing < tr class = hiderow >……

Java

2020-09-02

Java – WebLogic Server:: the server does not support version 3.0 of the J2EE Web module specification

When I try Weblogic 11g 10.3 When the 5 server runs the application, it displays "the server does not support version ……

Java

2020-09-02

What mechanism does Scala have for generics and wildcards compared to Java?

I often push the limits of the Java type system by using Guice, typeliteral, generics and wildcards I often encounter ……

Java

2020-09-02

Java – use 2 RGB colors with alpha

When I combine two colors, I'm trying to get the final color (in Java), and the color at the top has alpha transparenc……

Java

2020-09-02

How to use private Java classes for effective API design

I am writing my first "API jar", which will be an open source library and used by (possibly) other developers I read J……

Java

2020-08-31

Set the “user agent” parameter for urlconnection to query Google from Java applications

I tried to get the results from the Java query as follows: String urlquery = "https://www.google.com/search?hl=en&……

Java

2020-08-31

Java – replaceall boundaries and exceptions

I'm trying to use replaceall to eliminate all spaces in the string, except two areas If my string is AB CD #E F# #……

Java

2020-08-31

Are there any problems when the project has different versions of the java compiler?

I have an eclipse workspace with several Java projects (in Maven); These are interdependent Recently, I started to cha……

Java

2020-08-31

Java: a neat mysterious veil

I have a list of filled integers: List collection = new ArrayList(); collection.add(this.score1); collection.add(this.……

Java

2020-08-31

Java – sort a two-dimensional array based on a row of data

I'm not sure whether the title correctly indicates the question I want to ask Suppose I have a two-dimensional int arr……

Java

2020-08-31

Java – Hibernate: two onetomany attributes mapped by the same entity with different columns

I know this can be easily solved through HQL query, but I prefer hibernate to handle some onetomany attributes for me ……

Java

2020-08-31

How do I distinguish between two pending change lists in perforce?

I have several similar pending change lists, based on the top of the code branch and the same workspace in perforce I ……

Java

2020-08-31

Java – MVC architecture for working with servlets

So, yes, that's my understanding >Servlet is just an intermediary, which is responsible for finding out the meaning……

Java

2020-08-31

Java – no suitable driver Try using hibernate to connect to the PostgreSQL database on heroku

I'm sorry to bother you, but I've been receiving errors. I don't understand why As specified in the title, I'm trying ……

Java

2020-08-31

Java – how does null work in this code?

See English answers > method overloading and choosing the most specific type 9 class Test1{ public void doStuff……

Java

2020-08-31

Java – need ideas on how to insert small text phrases on the panel

I tried to insert the "puzzle game" text circled in red in the attached image I have put all four blue buttons and tex……

Java

2020-08-31

Java – ArrayList of arrays, how to make the size of the last array different from other arrays in the list

Explain what I want to achieve: I get a file. I have to read data from the file and create a block with a size of 1 KB……

Java

2020-08-31

Java – does a lot of annotated code affect the size of class files?

I have a code that I no longer need This is about 1000 lines So I just want to know if keeping this code in my java fi……

Java

2020-08-31

Java – force UI update

I have a piece of code to capture screen shots of nodes in JavaFX: public BufferedImage getSnapshot(final Node... hide……

Java

2020-08-31

Java – httpclient 403 error when using valid client certificate

I'm trying to automate some tasks on the website using Java I have a valid client for the website (works when I log in……

Java

2020-08-31

Java – the default character set (us-ascii) on heroku causes problems

We deployed a Java application based on Maven jetty on heroku Locals, when I do this: System.out.println("Default Char……

Java

2020-08-31

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Java: how to make this serializable?

Java – generic parameters for serializable collections

Java – how do I get numbers? How many items have different names?

Java – spring using security: authentication principal in the link username

Java – buttons are not initially drawn

Java – how do I display jtextfield when I click an image?

Java – should the connectmanager really shut down?

Java – calendar volume affects other calendars

Exception in thread “main” Java lang.RuntimeException：Stub

Java – reference to ArrayList element

Java desktop notification Ubuntu

Java – jsoup: Retrieves elements that do not contain specific attributes

Java – WebLogic Server:: the server does not support version 3.0 of the J2EE Web module specification

What mechanism does Scala have for generics and wildcards compared to Java?

Java – use 2 RGB colors with alpha

How to use private Java classes for effective API design

Set the “user agent” parameter for urlconnection to query Google from Java applications

Java – replaceall boundaries and exceptions

Are there any problems when the project has different versions of the java compiler?

Java: a neat mysterious veil

Java – sort a two-dimensional array based on a row of data

Java – Hibernate: two onetomany attributes mapped by the same entity with different columns

How do I distinguish between two pending change lists in perforce?

Java – MVC architecture for working with servlets

Java – no suitable driver Try using hibernate to connect to the PostgreSQL database on heroku

Java – how does null work in this code?

Java – need ideas on how to insert small text phrases on the panel

Java – ArrayList of arrays, how to make the size of the last array different from other arrays in the list

Java – does a lot of annotated code affect the size of class files?

Java – force UI update

Java – httpclient 403 error when using valid client certificate

Java – the default character set (us-ascii) on heroku causes problems

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