Java多线程系列“JUC原子类”04之AtomicLongArray原子类

 1 package com.test.a;
 2 
 3 // LongArrayTest.java的源码
 4 import java.util.concurrent.atomic.AtomicLongArray;
 5 
 6 public class LongArrayTest {
 7 
 8     public static void main(String[] args) {
 9 
10         // 新建AtomicLongArray对象
11         long[] arrLOng= new long[] { 10, 20, 30, 40, 50 };
12         AtomicLongArray ala = new AtomicLongArray(arrLong);
13 
14         ala.set(0, 100);
15         for (int i = 0, len = ala.length(); i )
16             System.out.printf("get(%d) : %s\n", i, ala.get(i));
17 
18         System.out.printf("%20s : %s\n", "getAndDecrement(0)", ala.getAndDecrement(0));
19         System.out.printf("%20s : %s\n", "decrementAndGet(1)", ala.decrementAndGet(1));
20         System.out.printf("%20s : %s\n", "getAndIncrement(2)", ala.getAndIncrement(2));
21         System.out.printf("%20s : %s\n", "incrementAndGet(3)", ala.incrementAndGet(3));
22 
23         System.out.printf("%20s : %s\n", "addAndGet(100)", ala.addAndGet(0, 100));
24         System.out.printf("%20s : %s\n", "getAndAdd(100)", ala.getAndAdd(1, 100));
25 
26         System.out.printf("%20s : %s\n", "compareAndSet()", ala.compareAndSet(2, 31, 1000));
27         System.out.printf("%20s : %s\n", "get(2)", ala.get(2));
28     }
29 }

 1 get(0) : 100
 2 get(1) : 20
 3 get(2) : 30
 4 get(3) : 40
 5 get(4) : 50
 6   getAndDecrement(0) : 100
 7   decrementAndGet(1) : 19
 8   getAndIncrement(2) : 30
 9   incrementAndGet(3) : 41
10       addAndGet(100) : 199
11       getAndAdd(100) : 19
12      compareAndSet() : true
13               get(2) : 1000