Package org.apache.tapestry5.ioc.internal.util

## Class JDKUtils

- java.lang.Object
- - org.apache.tapestry5.ioc.internal.util.JDKUtils

-     public class JDKUtils
      extends Object

  Internal utilities for identifying the JDK version, used in the rare cases that we are patching around JDK bugs.

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static boolean` | `JDK_1_5` | Is the running JVM JDK 1.5?

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `JDKUtils()` |

  - ### Method Summary

    All Methods Static Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `static Lock` | `createLockForThreadLocalCreation()` | Deprecated. Deprecated in 5.4 with no replacement.

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

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

- - ### Field Detail

    - #### JDK_1_5

          public static final boolean JDK_1_5

      Is the running JVM JDK 1.5?

  - ### Constructor Detail

    - #### JDKUtils

          public JDKUtils()

  - ### Method Detail

    - #### createLockForThreadLocalCreation

          public static Lock createLockForThreadLocalCreation()

      Deprecated.
      Deprecated in 5.4 with no replacement.
      Returns a `ReentrantLock` used to serialize access to the construction of a thread local; this is only needed under JDK 1.5 (due to a bug in the JDK); for other JDKs, a `DummyLock` is returned.
      Returns:
        lock to use when creating
      Since:
        5.3