LxLxBlog

Java – how do I update a map or list on the AWS dynamodb documentation API?

The new AWS dynamodb document API allows two new data types to directly correspond to the basic JSON representation: M……

Java

2020-02-20

Processing asynchronous signals in multithreaded programs

The Linux programming interface book mentions a method of processing asynchronous signals in multithreaded programs: T……

Java

2020-02-20

Java – wait for multiple swingworkers

Consider the following code snippet: import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.ev……

Java

2020-02-20

Java – is there a server independent way to implement basic authentication?

I'm trying to add basic authentication to my restful web service At present, I perform basic authentication on Apache ……

Java

2020-02-20

Java – gson deserializes the interface of its class implementation

I'm using retrofit 2.1 0 and converter gson: 2.1 0 and gson alone: 2.6 2. Customize serialization / deserialization Th……

Java

2020-02-20

Java – how to implement the JSR specification

I am considering implementing one or two JSR APIs I haven't read the entire specification (the plan is to read them wh……

Java

2020-02-20

Graphics are not displayed in jlayeredpane (Java Swing)

I'm trying to build an image based on user input step by step What I'm trying to do is create a bunch of graphics and ……

Java

2020-02-20

Java import statement

I use Java on Debian 5 Why is there a difference between the following? Case 1: import java.util.*; Case 2: import jav……

Java

2020-02-20

Java – no resource matching the given name can be found (in ‘text’, the value is’ @ string / continue_label ‘)

Let me start by saying I'm a brand new Android programmer I'm using pragmatic's Hello Android book (3rd Edition) I'm s……

Java

2020-02-20

How to use Java library. Add rxtxserial to path?

See English answer > java lang.UnsatisfiedLinkError: no rxtxSerial in java. library. path11 java.lang.UnsatisfiedLi……

Java

2020-02-20

Java, generics don’t work

In my opinion, it should work, but that's not the case Why? Source code: package javaapplication1; import java.util.*……

Java

2020-02-20

Java – operation is not allowed after the resultset is closed

Well, he has been trying to solve this problem for the past two days Statement statement = con.createStatement(); ……

Java

2020-02-20

Java – wildfly 8, remote debugging applications

I need to debug y nodes remotely in JBoss 8 / wildly cluster (running two nodes on one machine) For this, in our maste……

Java

2020-02-20

Java – ignore ‘file Result of mkdirs() ‘

This is mydir My code in mkdirs(); This code shows that I ignored file Result warning for mkdirs() I tried to fix this……

Java

2020-02-20

Why are Java and C # different in oops?

1) Why are the following codes different C#： class Base { public void foo() { System.Console.WriteLine("base……

Java

2020-02-20

Java – how to make izpack installer Jar file Exe file

I use izpack to install an installer It's here Jar file I think so Exe file for distribution What should I do? A simpl……

Java

2020-02-20

Java – the correct way to automatically connect hibernate session in spring transaction JUnit test

This problem is similar to the previous one I tried to @ autowire a hibernate session in my spring JUnit transaction t……

Java

2020-02-20

Java – adding to HashMap takes a long time

In my java program, I have stopped for a few lines, which takes too much time (about 20 seconds), which seems strange ……

Java

2020-02-20

Java – maven nattable cleaning installation failed

I tried to import and solve the developer project of nattable project, as described in their Getting Started tutorial ……

Java

2020-02-20

Java – process multipart / form data input

I'm just trying to use formdatamultipart, but unfortunately it doesn't seem to work SEVERE: A message body reader for ……

Java

2020-02-20

Java – can I add breakpoints to classes where I don’t have source code?

I want to add breakpoints to classes in eclipse, but I don't have its source code Is it possible to add breakpoints to……

Java

2020-02-20

Java – use webservicetemplate and keystore

Can I configure a web service template using a Java keystore? Edit I'm looking for a way to configure the keystore loc……

Java

2020-02-20

Representing numbers in byte arrays (Java programming)

I tried to use a two byte array to represent port number 9876 (or 0x2694 in hexadecimal): class foo { public stat……

Java

2020-02-20

Java – Eclipse: save without save operation

This hope is easy: I seem to remember a keyboard shortcut or menu modifier for saving files and temporarily disabling ……

Java

2020-02-20

Java null behavior

I'm trying to understand how null works in Java If we assign null to any object, what happens after the scene? Does it……

Java

2020-02-20

Date timezone conversion in Java?

The most direct code I can think of is: SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String in……

Java

2020-02-20

Mix of slider and progress bar JavaFX

I want to click ProgressBar on the slider And learn a certain proportion of the track I need to create progress in a m……

Java

2020-02-20

Java – Solr cannot load MySQL JDBC Driver

I use Solr 4.6 on Mac 1. I try to find out how to load data from MySQL using data import But I couldn't load the jdbc ……

Java

2020-02-20

Java – how can an EJB client not find an EJB server without a URL?

I'm new to Java EE At present, I am passing the Java EE 6 tutorial Volume 1 (basic concept beta) of Sun Microsystems I……

Java

2020-02-20

Java – naming convention for akka messages and actors

I am currently making a very large Java application based on akka. I have encountered several problems and I am not fi……

Java

2020-02-20

Java – spring property placeholders do not work properly

I'm in stackoverflow I've seen similar problems on. Com, but no solution is helpful to me #possible values: dev test p……

Java

2020-02-20

Java – parses a 20 GB input file into an ArrayList

I need to sort 20 GB files (composed of random numbers) in ascending order, but I don't know which technology to use I……

Java

2020-02-20

搜索内容

Java – how do I update a map or list on the AWS dynamodb documentation API?

Processing asynchronous signals in multithreaded programs

Java – wait for multiple swingworkers

Java – is there a server independent way to implement basic authentication?

Java – gson deserializes the interface of its class implementation

Java – how to implement the JSR specification

Graphics are not displayed in jlayeredpane (Java Swing)

Java import statement

Java – no resource matching the given name can be found (in ‘text’, the value is’ @ string / continue_label ‘)

How to use Java library. Add rxtxserial to path?

Java, generics don’t work

Java – operation is not allowed after the resultset is closed

Java – wildfly 8, remote debugging applications

Java – ignore ‘file Result of mkdirs() ‘

Why are Java and C # different in oops?

Java – how to make izpack installer Jar file Exe file

Java – the correct way to automatically connect hibernate session in spring transaction JUnit test

Java – adding to HashMap takes a long time

Java – maven nattable cleaning installation failed

Java – process multipart / form data input

Java – can I add breakpoints to classes where I don’t have source code?

Java – use webservicetemplate and keystore

Representing numbers in byte arrays (Java programming)

Java – Eclipse: save without save operation

Java null behavior

Date timezone conversion in Java?

Mix of slider and progress bar JavaFX

Java – Solr cannot load MySQL JDBC Driver

Java – how can an EJB client not find an EJB server without a URL?

Java – naming convention for akka messages and actors

Java – spring property placeholders do not work properly

Java – parses a 20 GB input file into an ArrayList

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