privatefinal AtomicInteger ctl=newAtomicInteger(ctlOf(RUNNING,0));privatestaticfinal intCOUNT_BITS=Integer.SIZE-3;privatestaticfinal intCAPACITY=(1<<COUNT_BITS)-1;// runState is stored in the high-order bitsprivatestaticfinal intRUNNING=-1<<COUNT_BITS;privatestaticfinal intSHUTDOWN=0<<COUNT_BITS...
+ Unary plus operator; indicates positive value (numbers are positive without this, however) - Unary minus operator; negates an expression ++ Increment operator; increments a value by 1 -- Decrement operator; decrements a value by 1 ! Logical complement operator; inverts the value of a boolea...
public static final int UNIT_DECREMENT 2 public static final int UNIT_INCREMENT 1java.awt.event.ComponentEvent public static final int COMPONENT_FIRST 100 public static final int COMPONENT_HIDDEN 103 public static final int COMPONENT_LAST 103 public static final int COMPONENT_MOVED 100 public static...
the remainder when f1 is divided by f2. ceil public static double ceil(double a) Returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer. Special cases: If the argument value is already equal to...
* Atomically increments by one the current value. * * @return the updated value */ public final int incrementAndGet() { return unsafe.getAndAddInt(this, valueOffset, 1) + 1; } /** * Atomically decrements by one the current value. ...
publicclassImmutableClass{publicstaticvoidmain(String[] args) {Map<String,Integer> testMap =newHashMap<>();Map<String,Integer> testUnmodifiable =Collections.unmodifiableMap(testMap); testUnmodifiable.put("input-a",1); } } 执行时抛出异常
可能会堆积大量的请求，从而导致OOM；CachedThreadPool和ScheduledThreadPool允许创建的线程数量为Integer.MAX...
1. 线程池的任务执行步骤 当向线程池提交一个任务之后,线程池是如何处理这个任务的呢?处理流程图如图 1-1所示。 图1-1 线程池的主要处理流程 从图中可以看出,当提交一个新任务到线程池时,线程池的处理流程如下。 1.线程池判断核心线程池里的线程是否都在执行任务。如果不是,则创建一个新的...
public final void wait() throws InterruptedException 1. Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object. In other words, this method behaves exactly as if it simply performs the call wait(0).The current thread must...
(integer) 1 #将 key 中存储的数字值 +10 # incrby key increment 127.0.0.1:6379> INCRBY cnt 10 (integer) 11 #将 key 中储存的数字值 -1 127.0.0.1:6379> DECR cnt (integer) 10 #将 key 中存储的数字值 -6 # decrby key decrement