Switch from j.u.l to the platform API (fixes #456)

caffeine/src/main/java/com/github/benmanes/caffeine/cache/BoundedLocalCache.java

@@ -29,6 +29,8 @@
 import java.io.InvalidObjectException;
 import java.io.ObjectInputStream;
 import java.io.Serializable;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
 import java.lang.ref.Reference;
 import java.lang.ref.ReferenceQueue;
 import java.lang.ref.WeakReference;
@@ -65,8 +67,6 @@
 import java.util.function.Function;
 import java.util.function.Predicate;
 import java.util.function.Supplier;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
@@ -181,7 +181,7 @@ abstract class BoundedLocalCache<K, V> extends BLCHeader.DrainStatusRef<K, V>
    * http://www.cs.columbia.edu/~nahum/w6998/papers/ton97-timing-wheels.pdf
    */
 
-  static final Logger logger = Logger.getLogger(BoundedLocalCache.class.getName());
+  static final Logger logger = System.getLogger(BoundedLocalCache.class.getName());
 
   /** The number of CPUs */
   static final int NCPU = Runtime.getRuntime().availableProcessors();
@@ -338,7 +338,7 @@ public void notifyRemoval(@Nullable K key, @Nullable V value, RemovalCause cause
     try {
       executor.execute(task);
     } catch (Throwable t) {
-      logger.log(Level.SEVERE, "Exception thrown when submitting removal listener", t);
+      logger.log(Level.ERROR, "Exception thrown when submitting removal listener", t);
       task.run();
     }
   }
@@ -1241,7 +1241,7 @@ void refreshIfNeeded(Node<K, V> node, long now) {
         });
       } catch (Throwable t) {
         node.casWriteTime(refreshWriteTime, oldWriteTime);
-        logger.log(Level.SEVERE, "Exception thrown when submitting refresh task", t);
+        logger.log(Level.ERROR, "Exception thrown when submitting refresh task", t);
       }
     }
   }
@@ -1371,7 +1371,7 @@ void afterWrite(Runnable task) {
       try {
         performCleanUp(task);
       } catch (RuntimeException e) {
-        logger.log(Level.SEVERE, "Exception thrown when performing the maintenance task", e);
+        logger.log(Level.ERROR, "Exception thrown when performing the maintenance task", e);
       }
     } else {
       scheduleAfterWrite();
@@ -1437,7 +1437,7 @@ public void cleanUp() {
     try {
       performCleanUp(/* ignored */ null);
     } catch (RuntimeException e) {
-      logger.log(Level.SEVERE, "Exception thrown when performing the maintenance task", e);
+      logger.log(Level.ERROR, "Exception thrown when performing the maintenance task", e);
     }
   }
 
@@ -3309,7 +3309,7 @@ public boolean exec() {
       try {
         run();
       } catch (Throwable t) {
-        logger.log(Level.SEVERE, "Exception thrown when performing the maintenance task", t);
+        logger.log(Level.ERROR, "Exception thrown when performing the maintenance task", t);
       }
 
       // Indicates that the task has not completed to allow subsequent submissions to execute

caffeine/src/main/java/com/github/benmanes/caffeine/cache/Caffeine.java

@@ -19,6 +19,8 @@
 import static java.util.Objects.requireNonNull;
 
 import java.io.Serializable;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
 import java.lang.ref.SoftReference;
 import java.lang.ref.WeakReference;
 import java.time.Duration;
@@ -33,8 +35,6 @@
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 import java.util.function.Supplier;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.checkerframework.checker.index.qual.NonNegative;
 import org.checkerframework.checker.nullness.qual.NonNull;
@@ -137,7 +137,7 @@
  *     #removalListener}
  */
 public final class Caffeine<K, V> {
-  static final Logger logger = Logger.getLogger(Caffeine.class.getName());
+  static final Logger logger = System.getLogger(Caffeine.class.getName());
   static final Supplier<StatsCounter> ENABLED_STATS_COUNTER_SUPPLIER = ConcurrentStatsCounter::new;
 
   enum Strength { WEAK, SOFT }

caffeine/src/main/java/com/github/benmanes/caffeine/cache/LoadingCache.java

@@ -96,7 +96,7 @@ public interface LoadingCache<K, V> extends Cache<K, V> {
    * previous value (if any) will continue to be returned by {@code get(key)} unless it is evicted.
    * If the new value is loaded successfully it will replace the previous value in the cache; if an
    * exception is thrown while refreshing the previous value will remain, <i>and the exception will
-   * be logged (using {@link java.util.logging.Logger}) and swallowed</i>.
+   * be logged (using {@link System.Logger}) and swallowed</i>.
    * <p>
    * Caches loaded by a {@link CacheLoader} will call {@link CacheLoader#reload} if the cache
    * currently contains a value for the {@code key}, and {@link CacheLoader#load} otherwise. Loading

caffeine/src/main/java/com/github/benmanes/caffeine/cache/LocalAsyncCache.java

@@ -18,6 +18,8 @@
 import static java.util.Objects.requireNonNull;
 
 import java.io.Serializable;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
 import java.util.AbstractCollection;
 import java.util.AbstractMap;
 import java.util.AbstractSet;
@@ -39,8 +41,6 @@
 import java.util.function.BiConsumer;
 import java.util.function.BiFunction;
 import java.util.function.Function;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
@@ -55,7 +55,7 @@
  * @author ben.manes@gmail.com (Ben Manes)
  */
 interface LocalAsyncCache<K, V> extends AsyncCache<K, V> {
-  Logger logger = Logger.getLogger(LocalAsyncCache.class.getName());
+  Logger logger = System.getLogger(LocalAsyncCache.class.getName());
 
   /** Returns the backing {@link LocalCache} data store. */
   LocalCache<K, CompletableFuture<V>> cache();

caffeine/src/main/java/com/github/benmanes/caffeine/cache/LocalAsyncLoadingCache.java

@@ -17,14 +17,14 @@
 
 import static java.util.Objects.requireNonNull;
 
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
 import java.lang.reflect.Method;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Executor;
 import java.util.function.Function;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -36,7 +36,7 @@
  */
 abstract class LocalAsyncLoadingCache<K, V>
     implements LocalAsyncCache<K, V>, AsyncLoadingCache<K, V> {
-  static final Logger logger = Logger.getLogger(LocalAsyncLoadingCache.class.getName());
+  static final Logger logger = System.getLogger(LocalAsyncLoadingCache.class.getName());
 
   final boolean canBulkLoad;
   final AsyncCacheLoader<K, V> loader;

caffeine/src/main/java/com/github/benmanes/caffeine/cache/LocalLoadingCache.java

@@ -17,6 +17,8 @@
 
 import static java.util.Objects.requireNonNull;
 
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
 import java.lang.reflect.Method;
 import java.util.Collections;
 import java.util.LinkedHashMap;
@@ -26,8 +28,6 @@
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.CompletionException;
 import java.util.function.Function;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -38,7 +38,7 @@
  * @author ben.manes@gmail.com (Ben Manes)
  */
 interface LocalLoadingCache<K, V> extends LocalManualCache<K, V>, LoadingCache<K, V> {
-  Logger logger = Logger.getLogger(LocalLoadingCache.class.getName());
+  Logger logger = System.getLogger(LocalLoadingCache.class.getName());
 
   /** Returns the {@link CacheLoader} used by this cache. */
   CacheLoader<? super K, V> cacheLoader();

caffeine/src/main/java/com/github/benmanes/caffeine/cache/Scheduler.java

@@ -18,15 +18,15 @@
 import static java.util.Objects.requireNonNull;
 
 import java.io.Serializable;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Future;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.checkerframework.checker.index.qual.Positive;
 import org.checkerframework.checker.nullness.qual.NonNull;
@@ -104,7 +104,7 @@ public Future<?> schedule(Executor executor, Runnable command, long delay, TimeU
 }
 
 final class ExecutorServiceScheduler implements Scheduler, Serializable {
-  static final Logger logger = Logger.getLogger(ExecutorServiceScheduler.class.getName());
+  static final Logger logger = System.getLogger(ExecutorServiceScheduler.class.getName());
   static final long serialVersionUID = 1;
 
   final ScheduledExecutorService scheduledExecutorService;
@@ -134,7 +134,7 @@ public Future<?> schedule(Executor executor, Runnable command, long delay, TimeU
 }
 
 final class GuardedScheduler implements Scheduler, Serializable {
-  static final Logger logger = Logger.getLogger(GuardedScheduler.class.getName());
+  static final Logger logger = System.getLogger(GuardedScheduler.class.getName());
   static final long serialVersionUID = 1;
 
   final Scheduler delegate;

caffeine/src/main/java/com/github/benmanes/caffeine/cache/stats/GuardedStatsCounter.java

@@ -17,8 +17,8 @@
 
 import static java.util.Objects.requireNonNull;
 
-import java.util.logging.Level;
-import java.util.logging.Logger;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
 
 import com.github.benmanes.caffeine.cache.RemovalCause;
 
@@ -30,7 +30,7 @@
  */
 @SuppressWarnings("PMD.AvoidDuplicateLiterals")
 final class GuardedStatsCounter implements StatsCounter {
-  static final Logger logger = Logger.getLogger(GuardedStatsCounter.class.getName());
+  static final Logger logger = System.getLogger(GuardedStatsCounter.class.getName());
 
   final StatsCounter delegate;