package com.jeetu.app.util; import java.util.*; public class test { public static void main(String[] args) { List linkedList = new LinkedList(); executeLogic(addContents(linkedList, "LinkedList"), displayContents(linkedList, "LinkedList")).start(); List arrayList = new ArrayList(); executeLogic(addContents(arrayList, "ArrayList"), displayContents(arrayList, "ArrayList")).start(); SethashSet = new HashSet (); executeLogic(addContents(hashSet, "HashSet"), displayContents(hashSet, "HashSet")).start(); Set treeSet = new TreeSet (); executeLogic(addContents(treeSet, "TreeSet"), displayContents(treeSet, "TreeSet")).start(); } static Thread executeLogic(final Thread t1, final Thread t2) { Thread t = new Thread(new Runnable() { public void run() { while (true) { try { t1.start(); t1.join(); t2.start(); break; } catch (InterruptedException e) { e.printStackTrace(); } } } }); return t; } static Thread addContents(final Collection e, final String type) { Thread t = new Thread(new Runnable() { public void run() { long end; long start = System.currentTimeMillis(); long limit = 5000000; for (int index = 1; index <= limit; index++) { e.add(index); } end = System.currentTimeMillis(); System.out.println("Write[" + type + "]: " + (end - start) + " ms."); } }); return t; } static Thread displayContents(final Collection e, final String type) { Thread t = new Thread(new Runnable() { public void run() { long end; long start = System.currentTimeMillis(); int total = 0; Iterator i = e.iterator(); while (i.hasNext()) { total = total + (Integer) i.next(); } end = System.currentTimeMillis(); System.out.println("Read[" + type + "]: " + (end - start) + " ms ,Total = " + total + "."); } }); return t; } }
Result:
Write[ArrayList]: 12997 ms. Write[LinkedList]: 13144 ms. Read[ArrayList]: 185 ms ,Total = 1647668640. Read[LinkedList]: 69 ms ,Total = 1647668640. Write[HashSet]: 29986 ms. Read[HashSet]: 69 ms ,Total = 1647668640. Write[TreeSet]: 38823 ms. Read[TreeSet]: 67 ms ,Total = 1647668640. Process finished with exit code 0
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