org.apache.lucene.util

## Class Counter

- java.lang.Object
- - org.apache.lucene.util.Counter

-     public abstract class Counter
      extends Object

  Simple counter class
  WARNING: This API is experimental and might change in incompatible ways in the next release.
  NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `Counter()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `abstract long` | `addAndGet(long delta)` Adds the given delta to the counters current value
    `abstract long` | `get()` Returns the counters current value
    `static Counter` | `newCounter()` Returns a new counter.
    `static Counter` | `newCounter(boolean threadSafe)` Returns a new counter.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### Counter

          public Counter()

  - ### Method Detail

    - #### addAndGet

          public abstract long addAndGet(long delta)

      Adds the given delta to the counters current value
      Parameters:
        `delta` - the delta to add
      Returns:
        the counters updated value

    - #### get

          public abstract long get()

      Returns the counters current value
      Returns:
        the counters current value

    - #### newCounter

          public static Counter newCounter()

      Returns a new counter. The returned counter is not thread-safe.

    - #### newCounter

          public static Counter newCounter(boolean threadSafe)

      Returns a new counter.
      Parameters:
        `threadSafe` - `true` if the returned counter can be used by multiple threads concurrently.
      Returns:
        a new counter.

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