Method getJLA

corpus/java/training/guava/base/Throwables.java:417–437

Returns the JavaLangAccess class that is present in all Sun JDKs. It is not whitelisted for AppEngine, and not present in non-Sun JDKs.

()

   * AppEngine, and not present in non-Sun JDKs.
   */
  @GwtIncompatible // java.lang.reflect
  @Nullable
  private static Object getJLA() {
    try {
      /*
       * We load sun.misc.* classes using reflection since Android doesn't support these classes and
       * would result in compilation failure if we directly refer to these classes.
       */
      Class<?> sharedSecrets = Class.forName(SHARED_SECRETS_CLASSNAME, false, null);
      Method langAccess = sharedSecrets.getMethod("getJavaLangAccess");
      return langAccess.invoke(null);
    } catch (ThreadDeath death) {
      throw death;
    } catch (Throwable t) {
      /*
       * This is not one of AppEngine's whitelisted classes, so even in Sun JDKs, this can fail with
       * a NoClassDefFoundError. Other apps might deny access to sun.misc packages.
       */
      return null;
    }
  }

  /**
   * Returns the Method that can be used to resolve an individual StackTraceElement, or null if that