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Java – distinguish between connection rejected and connection timeout

Using Java net. socket. When connect(), both connection rejection and timeout will result in connectexception java.net……

Java

2020-01-31

What are the default modifiers for fields and methods in Java annotations?

Which is the default modifier for X and M public @interface Anno { int m() default x; int x = 10; } ？ I think……

Java

2020-01-31

JUnit – integration testing of spring boot based microservices

I have read a lot of guides about using spring boot and restful services, many of which contain information about runn……

Java

2020-01-31

Java – is it necessary to close the I / O stream created from the socket IO stream when the socket is closed?

private val in = new BufferedReader(new InputStreamReader(con.getInputStream())) private val in = new BufferedReader(n……

Java

2020-01-31

Generic Dao in Java

I'm trying to develop a general Dao in Java I tried the following This is public abstract class AbstractDAO<T> ……

Java

2020-01-31

Java – multiple enumerations and one enum

When I stumbled upon something I didn't understand why, I was looking at the example implementation of publisher (asyn……

Java

2020-01-31

Java – bug about getbounds () and setbounds () on Linux_ Solution with id = 4806603?

On Linux platform, frame:: getbounds and frame:: setbounds cannot work consistently This was in 2003 (!) Report, see h……

Java

2020-01-31

Java – why mystring equals(“aString”); Different from “astring” equals(myString);?

I have heard many times that Boolean equals (object o) is used to compare strings. It is best to put the constant on t……

Java

2020-01-31

Java – use GlassFish Library in proprietary software

I want to use some parts of GlassFish in a proprietary software licensed under CDDL gplv2 Am I allowed to do this? I d……

Java

2020-01-31

Java – Maven resources plugin: 2.6 – unable to create resource output directory

So I just created a Linux instance from EC2, and now I'm trying to install AWS Java SDK on it At the end of the instal……

Java

2020-01-31

Java executorservice invokeall() interrupt

I have a fixed thread pool executorservice with a width of 10 and a 100 callable list, each waiting for 20 seconds and……

Java

2020-01-31

Java – why was the last thread not interrupted?

I'm trying to demonstrate a "anytime algorithm" - an algorithm that can stop and return its current results at any tim……

Java

2020-01-31

How to use swingx 1.6 to highlight every other line in JTable

I need to highlight each line in JTable Using an older version of swingx, you can do this: table.setHighlighters(new H……

Java

2020-01-31

Java – convert c-shared library callbacks to other languages

I am developing a library that will be written in go and compiled into a C shared library, so it can be written in Pyt……

Java

2020-01-31

Java – copy of Lombok @ getter and collections

Using @ getter on the list field works normally, but concurrent modificationexceptions are encountered when trying to ……

Java

2020-01-31

Simulation – 6502 and Commodore pet interrupt behavior in independent test

I am building Commodore pet on FPGA I have implemented my own 6502 core in Kansas lava (the code can be found in https……

Java

2020-01-31

Java – when the first parameter is a class with a method, you cannot replace the SAM constructor with lambda

I'm confused about the SAM constructor. I have this Java class: public class TestSam<T> { public void obser……

Java

2020-01-31

Java – chart above grid line in achartengine bar chart

In achartengine bar chart, can I draw a bar chart through grid lines? How do you do it? At present, grid lines are dra……

Java

2020-01-31

A Java man asked: why should I learn Python?

This may be a language troll or failure to perform basic Google search; Please rest assured that this is not the forme……

Java

2020-01-31

Java scripting language (JSR 223)

I'm designing a framework. I want to attach it to the scripting language API to make it more general and easier to use……

Java

2020-01-31

Java – call thread What is the performance cost of isinterrupted()?

From the Java source code, it looks like native code Is the cost roughly equivalent to volatile reads or does it need ……

Java

2020-01-31

Java – why can’t Tomcat find smtptransport (session, urlname)?

We have a web application that sends mail For some reason, its installation has decided that it cannot find the constr……

Java

2020-01-31

Print arrays in Java

I'm writing a method to print every object it passes By calling object The toString () method works, but not for array……

Java

2020-01-31

Beginner’s questions about heap and garbage in clojure

I have a question about clojure: (defn getAllPrimes [lim] (defn getPrimes [primes numlist] (if (not-empty numli……

Java

2020-01-31

Java – hamcrest matcher compares the double value of JSON

I am using the hamcrest corematcher class as part of the spring test integration test My JSON looks like: {"data":[{"d……

Java

2020-01-31

Java – how to add elements to the end of an array?

I want to know how to add or append a new element to the end of the array Is there a simple way to add elements at the……

Java

2020-01-31

Parallel Haskell – GHC gc’ing spark

I have a program that I'm trying to parallelize (completely paste with runnable code here) I have analyzed and found t……

Java

2020-01-31

Java – what is the best way to navigate complex trees of different objects?

For example: class Vehicle { Collection<Axle> axles; } class Axle { Collection<Wheel> wheels; } ……

Java

2020-01-31

Java – when AspectJ is loaded, weaving cannot work on spring beans

I'm developing a project that uses the Java (not XML) style of spring configuration to connect dependencies It also ha……

Java

2020-01-31

Java – convert the list to a list of 10 items

I have a list of POJOs Convert this POJOs list to a list, where each sublist is 10 or smaller in size So, for example,……

Java

2020-01-31

Write temporary files in Java

I want to write temporary files in append mode I see that the file has been created, but the data in the StringBuffer ……

Java

2020-01-31

Java – handling illegalthreadstateexception

import java.io.*; import java.io.*; class Sysexecute { public static void main(String args[]) throws IOException,I……

Java

2020-01-31

搜索内容

Java – distinguish between connection rejected and connection timeout

What are the default modifiers for fields and methods in Java annotations?

JUnit – integration testing of spring boot based microservices

Java – is it necessary to close the I / O stream created from the socket IO stream when the socket is closed?

Generic Dao in Java

Java – multiple enumerations and one enum

Java – bug about getbounds () and setbounds () on Linux_ Solution with id = 4806603?

Java – why mystring equals(“aString”); Different from “astring” equals(myString);?

Java – use GlassFish Library in proprietary software

Java – Maven resources plugin: 2.6 – unable to create resource output directory

Java executorservice invokeall() interrupt

Java – why was the last thread not interrupted?

How to use swingx 1.6 to highlight every other line in JTable

Java – convert c-shared library callbacks to other languages

Java – copy of Lombok @ getter and collections

Simulation – 6502 and Commodore pet interrupt behavior in independent test

Java – when the first parameter is a class with a method, you cannot replace the SAM constructor with lambda

Java – chart above grid line in achartengine bar chart

A Java man asked: why should I learn Python?

Java scripting language (JSR 223)

Java – call thread What is the performance cost of isinterrupted()?

Java – why can’t Tomcat find smtptransport (session, urlname)?

Print arrays in Java

Beginner’s questions about heap and garbage in clojure

Java – hamcrest matcher compares the double value of JSON

Java – how to add elements to the end of an array?

Parallel Haskell – GHC gc’ing spark

Java – what is the best way to navigate complex trees of different objects?

Java – when AspectJ is loaded, weaving cannot work on spring beans

Java – convert the list to a list of 10 items

Write temporary files in Java

Java – handling illegalthreadstateexception

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