Java
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Java. io. IOException, “bad file number” USB connection
I'm setting up a USB connection between my Android phone and another device Now just send bytes to test I get some cle…… -
Java – why is PriorityQueue not like a queue?
I'm using priorityblockingqueue and priority fields In my tests, I used system #currenttime () as the priority - the c…… -
Java ee6 program scope
I need a schedule that runs every 5 minutes from 10 a.m. to 5:45 p.m. how can I do this with the @ schedule annotation…… -
Java – display blob (image) through JSP
I have a code to display employee charts Data (name, phone, photo, etc.) are stored in SQL server and displayed throug…… -
Jdk8 Java Does time have a Jackson data type module?
I'm working on the new jdk8 Java Time course looking for a module I've seen fasterxml GitHub project listing, but I ha…… -
Java – Samsung Galaxy 7 “(gt-p6210) does not detect USB debugging?
I am using Ubuntu Linux 10.04 PC because my Samsung Galaxy 7 "(gt-p6210) Homeycomb 3.2 did not detect the development …… -
Java – chain of responsibility: cycle or next step?
I am implementing a series of responsibility models I have different policies that can be combined into a list, and I …… -
Java SFTP upload uses jsch, but how to overwrite the current file?
I tried to use jsch to upload two files to a server with SFTP If the directory is empty, uploading files works normall…… -
Floating point precision error in Java
I want to know what is the best way to fix precision errors in Java As shown in the following example, there is a prec…… -
Best practices and design guidelines for writing XML in Java?
Several times I have encountered a task that requires the production of XML (smaller) Every time I wander: What are th…… -
Java – if an exception is thrown, ensure that the object is closed
I'm creating JDBC statements and resultset Findbugs correctly points out that if exceptions are thrown, I won't close …… -
No Java util. List is implicitly converted to scala list
I'm interested in scala collection. Java conversions has a very basic problem I would expect the following code to wor…… -
Effectively implement Java Native Interface webcam feed
I am developing a project to receive video input from webcam and display the moving area to users My "beta" attempt in…… -
Java – combine two different types of observable
See English answers > rxjava merge observables of different types @Override public void call(String s,Boolean b) { …… -
Java – okhttpclient broke after updating retrofit to retrofit 2
This error occurred after updating from retrofit to retrofit 2 The LIBS version I use in my application is: compile 'c…… -
Java – saves the state of the WebView and reloads the location
I know a lot about this, but they seem old and no longer work - at least for me I try to save the location of the web …… -
The Java – JAXB XML adapter works through annotations, but not through setadapter
I know all about how to use xmladapters to convert unmappable types, or just change how some objects are serialized / …… -
Java – repairing flight path with spring boot
When the migration failed in the spring boot project, I didn't quite understand what I should do I passed in my POM Fl…… -
Java – get localized week number using jodatime
I tried to get the current number of weeks with jodatime In France, week is defined as follows: >One week from Mond…… -
Remove fields from old Java classes that implement serializable
Suppose I have a version of the MyClass class, where I have two fields int count and string name I have saved the byte…… -
Java – how do I add / delete clips on buttons?
At present, I have a "relax_layout" container, which I use to add my clips What I want to achieve is that when I press…… -
Java – is the master partition inactive or unassigned a known node?
I run elastic search version 4.1.0 on Windows 8 I try to index documents through Java When running JUnit test, the err…… -
actionscript-3 – AS3 Vector. Sort() does not use sorting options?
In AS3, array Sort () uses some good sorting options, such as: > Array. Descending – sort arrays from large to smal…… -
Java – spring: how to cleanly terminate prototype scoped beans?
According to spring documentation, spring does not manage the full life cycle of its objects when beans are qualified …… -
Java – how to correctly specify the default value in the spring @ value annotation?
Initially, I had the following specifications: @Value("#{props.isFPL}") private boolean isFPL=false; This will correct…… -
Multithreading – asynccall and Delphi 2007
What I basically want is to start asynccall and continue my code loading I have an interface part that consumes a lot …… -
Java – compiled in CMD but error in NetBeans
I have a small java file given below class abc{ public static void main(String args[]){ Object a= 9; …… -
Java – simulated rain
I play a game in Java. I want to create a simulation of a raining cloud When it rains, the clouds should move to the r…… -
Java – how to obey the contract of equals() when deriving from an abstract class
Joshua Bloch wrote in his book "effective Java" that when derived classes add additional fields to checks, there is a …… -
Java – volatile variables that will never be assigned null will never contain null?
You can use the following concepts in java examples: public class X implements Runnable { public volatile Object x…… -
Java – foreign key mapping in the embeddable class
I'm using eclipse link for JPA I have an entity that has a compound key consisting of two fields The following are the…… -
Java – how to create a curve between 2 points in 2D and return the points that generate the curve every d distance?
I'm not good at math I have two points in 2D, a (x1, Y1) and B (X2, Y2) I need to create a virtual path from point a b……