包含标签：Java 的文章
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Java – should I synchronize on ReferenceQueue?
I was looking at the source code of weakhashmap and came across: private final ReferenceQueue<Object> queue = ne…… -
Java – how do overloaded methods work?
public class Test1 { public class Test1 { public static void main(String[] args) { Test1 test1 = new …… -
Java – application server maximum memory limit
How much memory can servers (JBoss, Tomcat, etc.) use? For example, if the server has 128GB of memory, can it use at l…… -
Java – how to reload properties using spring?
I am using the properties file of spring 3 I want to have a possibility to update some properties in the file and expo…… -
Java – listen for Ctrl C
Can I listen to Ctrl C when running groovy scripts from the command line? I have a script to create some files If I in…… -
How to prune out an integer array in Java?
My number is n. n will be the size of the array int numArray [] = new numArray[N]; However, the contents of the array …… -
Java – search for HashMap in the ArrayList of HashMap
I have an ArrayList of HashMap I want to search for HashMap in it, but I can't find a way to do this What do you sugge…… -
Java – common logging and log4j property files
I try to use log4j through commons logging if the log4j property file is not called log4 Properties, you will encounte…… -
Java – the application is not ice cream sandwich compatible
I have developed an Android application that cannot be downloaded from the market to Android ICs devices Use 4 When x …… -
Java – is there a preferred way to collect list streams into flat lists?
I wonder if there is a preferred way to flow from a list to a collection of elements that contain all the lists in the…… -
How does multithreading speed up applications (threads cannot run at the same time)?
I'm learning multithreading, but after reading some tutorials, I'm confused Intuitively, I would say that multithreadi…… -
Java EE – in JBoss 7.0 URL without jssessionid running in 1 does not work
For some security reasons, I think jsessionid in URL is prohibited from session tracking Before I put the web Before c…… -
Java – how to calculate the number of rows in jtextarea, including the number of rows caused by packaging?
I have a jtextarea. I have set word wrap and wrap style word to true I want to "wrap" the jtextarea to the minimum pos…… -
Array – what is the difference between a.length and a.heap-size?
I have a question about heap sorting It points out in the book "algorithm" that a.heap-size < = a.length Solution T…… -
Java – use the eclipse code formatter from your own program
Recently I wrote some tools to help me generate java code, otherwise it will be a long and tedious task I use freemake…… -
Java – what hashing techniques are used when building Bloom filters in clojure?
I want to build a bloom filter in clojure, but I don't know much about all the hash libraries that may be available in…… -
Java – a good programming practice for static initialization?
In Java, we use static initialization blocks: private static final ApiKey API_KEY; static { API_KEY = new ApiKey(…… -
Java – face detection is not applicable to front camera
So basically I have this code, if(mCamera.getParameters().getMaxNumDetectedFaces()==0) { System.ou…… -
Quicksort algorithm program in Java
I'm trying to implement the Quicksort algorithm program in Java, but I got the wrong answer public class QuickSort { …… -
Java – why use two different algorithms for sorting?
In the arrays class, quick sort is used for sorting primitives, but for sorting objects, it is merge sort I wonder why…… -
Java – layout preview rendering problem: porterduff color filter is not supported
After creating the navigation drawer activity in Android studio 1.4, the IDE will automatically generate some XML file…… -
Java – provides two different class instances of the same hashcode
I encountered a strange problem on the JBoss server, where two classes generated the same hashcode () Class<?> c…… -
Java – execute the jar command to exclude files
I followed the Java archive tool, but I couldn't find how to exclude folders For example, I have files in the working …… -
java – Weblogic 10.3. 1.0 is using COM bea. core. apache. commons. net_ 1.0. 0.0_ 1-4-1. Jar… I want to use commons-net-2.0 Jar from my code
Weblogic 10.3. 1.0 is using COM bea. core. apache. commons. net_ 1.0. 0.0_ 1-4-1. Jar... I want to use commons-net-2.0…… -
Java – where and how are exceptions used?
I'm reading about exception handling in Java so that I can write better code OK, I admit I'm guilty. I used too many t…… -
Java – clean up jetty – delete ‘unnecessary things’
I'm used to using jetty as my web container What I did in the installation step was to get the original tar ball and c…… -
Java – using requestbuilder to process attachments in GWT
I am sending an HTTP post request from GWT client to HTTP servlet The servlet is creating a PDF file from the request …… -
Why does Java 8 apply different annotations to derived classes?
If I have the following two classes: // Base.java public abstract class Base<T> { abstract void method(T t); }…… -
Java – prevent duplicate activities
So I'm both a novice in Java and creating Android applications, but not a novice in programming I've read most of deve…… -
Java – is it possible to define a Jax RS service interface separate from its implementation (using eclipse and Jersey)?
I don't know if the title is confusing, but let's say I have this interface: @Produces(MediaType.APPLICATION_JSON) @Pa…… -
Java – Jackson renames the original Boolean field by deleting ‘is’
This may be repeated But I couldn't find a solution I have a class public class MyResponse implements Serializable { …… -
Java – the easiest way to check whether a string consists of unique characters?
If a word consists of unique letters (case insensitive), I need to check Java Because the direct solution is boring, I……