22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.util.logging;
  27 
  28 import java.io.*;
  29 import java.util.*;
  30 import java.security.*;
  31 import java.lang.ref.ReferenceQueue;
  32 import java.lang.ref.WeakReference;
  33 import java.util.concurrent.ConcurrentHashMap;
  34 import java.nio.file.Paths;
  35 import java.util.concurrent.CopyOnWriteArrayList;
  36 import java.util.concurrent.locks.ReentrantLock;
  37 import java.util.function.BiFunction;
  38 import java.util.function.Function;
  39 import java.util.function.Predicate;
  40 import java.util.stream.Collectors;
  41 import java.util.stream.Stream;
  42 import jdk.internal.misc.JavaAWTAccess;
  43 import jdk.internal.misc.SharedSecrets;
  44 import sun.util.logging.internal.LoggingProviderImpl;
  45 import static jdk.internal.logger.DefaultLoggerFinder.isSystem;
  46 
  47 /**
  48  * There is a single global LogManager object that is used to
  49  * maintain a set of shared state about Loggers and log services.
  50  * <p>
  51  * This LogManager object:
  52  * <ul>
  53  * <li> Manages a hierarchical namespace of Logger objects.  All
  54  *      named Loggers are stored in this namespace.
  55  * <li> Manages a set of logging control properties.  These are
  56  *      simple key-value pairs that can be used by Handlers and
  57  *      other logging objects to configure themselves.
  58  * </ul>
  59  * <p>
  60  * The global LogManager object can be retrieved using LogManager.getLogManager().
  61  * The LogManager object is created during class initialization and
  62  * cannot subsequently be changed.
  63  * <p>

  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.util.logging;
  27 
  28 import java.io.*;
  29 import java.util.*;
  30 import java.security.*;
  31 import java.lang.ref.ReferenceQueue;
  32 import java.lang.ref.WeakReference;
  33 import java.util.concurrent.ConcurrentHashMap;
  34 import java.nio.file.Paths;
  35 import java.util.concurrent.CopyOnWriteArrayList;
  36 import java.util.concurrent.locks.ReentrantLock;
  37 import java.util.function.BiFunction;
  38 import java.util.function.Function;
  39 import java.util.function.Predicate;
  40 import java.util.stream.Collectors;
  41 import java.util.stream.Stream;
  42 import jdk.internal.access.JavaAWTAccess;
  43 import jdk.internal.access.SharedSecrets;
  44 import sun.util.logging.internal.LoggingProviderImpl;
  45 import static jdk.internal.logger.DefaultLoggerFinder.isSystem;
  46 
  47 /**
  48  * There is a single global LogManager object that is used to
  49  * maintain a set of shared state about Loggers and log services.
  50  * <p>
  51  * This LogManager object:
  52  * <ul>
  53  * <li> Manages a hierarchical namespace of Logger objects.  All
  54  *      named Loggers are stored in this namespace.
  55  * <li> Manages a set of logging control properties.  These are
  56  *      simple key-value pairs that can be used by Handlers and
  57  *      other logging objects to configure themselves.
  58  * </ul>
  59  * <p>
  60  * The global LogManager object can be retrieved using LogManager.getLogManager().
  61  * The LogManager object is created during class initialization and
  62  * cannot subsequently be changed.
  63  * <p>