Honwhy Wang honwhy
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| package org.example; | |
| import java.util.HashSet; | |
| import java.util.LinkedHashMap; | |
| import java.util.Set; | |
| public class TrieTreeNode { | |
| private char ch; | |
| private Set<Long> ids = new HashSet<>(); | |
| LinkedHashMap<Character, TrieTreeNode> children = new LinkedHashMap<>(); |
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| package org.example; | |
| import java.util.*; | |
| import java.util.concurrent.*; | |
| /** | |
| * Hello world! | |
| */ | |
| public class App { | |
| static BlockingQueue<Runnable> blockingQueue = new ArrayBlockingQueue<>(200); |
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| package com.example.br; | |
| import java.lang.reflect.Field; | |
| import java.util.HashMap; | |
| import java.util.Map; | |
| @MyTable("t_table") | |
| public class AnnotatedMap<K, V> extends HashMap<K,V> { | |
| public AnnotatedMap() { |
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| package org.example; | |
| import java.io.IOException; | |
| import java.net.InetSocketAddress; | |
| import java.net.SocketException; | |
| import java.nio.ByteBuffer; | |
| import java.nio.channels.SelectionKey; | |
| import java.nio.channels.Selector; | |
| import java.nio.channels.SocketChannel; | |
| import java.util.ArrayList; |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> | |
| </head> | |
| <body> | |
| </body> | |
| <div id="app"> | |
| <textarea v-model="input"> | |
| </textarea> |
honwhy
/ TcpTimeClient.java
Created
December 17, 2019 15:54
selector in client side(sorry forget the link from stackoverflow)
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| package com.honey; | |
| import java.io.File; | |
| import java.io.IOException; | |
| import java.net.InetSocketAddress; | |
| import java.nio.ByteBuffer; | |
| import java.nio.channels.SelectionKey; | |
| import java.nio.channels.Selector; | |
| import java.nio.channels.SocketChannel; | |
| import java.util.ArrayList; |
honwhy
/ ConsumerQueueDemo.java
Created
October 20, 2019 10:45
ConcurrentLinkedQueue vs BlockingQueue
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| package com.honey; | |
| import java.util.Arrays; | |
| import java.util.List; | |
| import java.util.concurrent.*; | |
| public class ConsumerQueueDemo { | |
| public static void main(String[] args) { | |
| //making hot spot code |
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| package com.honey; | |
| import javax.crypto.Cipher; | |
| import javax.crypto.spec.IvParameterSpec; | |
| import javax.crypto.spec.SecretKeySpec; | |
| import java.nio.charset.StandardCharsets; | |
| import java.util.Base64; | |
| import java.util.Random; | |
| public class AesDemo { |
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| public class MultiThreadHashMap { | |
| private static final Object PRESENT = new Object(); | |
| public static void main(String[] args) throws InterruptedException, BrokenBarrierException { | |
| final Map<String,Object> map = new HashMap<>(); //let map do resize multiple times | |
| int N = 1000; | |
| final CyclicBarrier cyclicBarrier = new CyclicBarrier(N+1); | |
| for (int i = 0; i < N; i++) { | |
| new Thread(new Runnable() { | |
| @Override | |
| public void run() { |
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| # dump script from http://dubbo.apache.org/zh-cn/docs/dev/principals/dummy.html | |
| JAVA_HOME=/usr/java | |
| OUTPUT_HOME=~/output | |
| DEPLOY_HOME=`dirname $0` | |
| HOST_NAME=`hostname` | |
| DUMP_PIDS=`ps --no-heading -C java -f --width 1000 | grep "$DEPLOY_HOME" |awk '{print $2}'` | |
| if [ -z "$DUMP_PIDS" ]; then | |
| echo "The server $HOST_NAME is not started!" |
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