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## java.util.logging
Class SocketHandler

    java.lang.Object
      |
      +--java.util.logging.Handler
            |
            +--java.util.logging.StreamHandler
                  |
                  +--java.util.logging.SocketHandler

public class SocketHandler
extends StreamHandler

Simple network logging `Handler`.

`LogRecords` are published to a network stream connection. By default the `XMLFormatter` class is used for formatting.

Configuration: By default each `SocketHandler` is initialized using the following `LogManager` configuration properties. If properties are not defined (or have invalid values) then the specified default values are used.

- java.util.logging.SocketHandler.level specifies the default level for the `Handler` (defaults to `Level.ALL`).
- java.util.logging.SocketHandler.filter specifies the name of a `Filter` class to use (defaults to no `Filter`).
- java.util.logging.SocketHandler.formatter specifies the name of a `Formatter` class to use (defaults to `java.util.logging.XMLFormatter`).
- java.util.logging.SocketHandler.encoding the name of the character set encoding to use (defaults to the default platform encoding).
- java.util.logging.SocketHandler.host specifies the target host name to connect to (no default).
- java.util.logging.SocketHandler.port specifies the target TCP port to use (no default).

The output IO stream is buffered, but is flushed after each `LogRecord` is written.

Since:
  1.4

Constructor Summary
`SocketHandler()` Create a `SocketHandler`, using only `LogManager` properties (or their defaults).
`SocketHandler(String host, int port)` Construct a `SocketHandler` using a specified host and port.

Method Summary
`void` | `close()` Close this output stream.
`void` | `publish(LogRecord record)` Format and publish a `LogRecord`.

Methods inherited from class java.util.logging.StreamHandler
`flush, isLoggable, setEncoding, setOutputStream`

Methods inherited from class java.util.logging.Handler
`getEncoding, getErrorManager, getFilter, getFormatter, getLevel, reportError, setErrorManager, setFilter, setFormatter, setLevel`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### SocketHandler

    public SocketHandler()
                  throws IOException

  Create a `SocketHandler`, using only `LogManager` properties (or their defaults).

Throws:
  `IllegalArgumentException` - if the host or port are invalid or are not specified as LogManager properties.
  `IOException` - if we are unable to connect to the target host and port.

### SocketHandler

    public SocketHandler(String host,
                         int port)
                  throws IOException

  Construct a `SocketHandler` using a specified host and port. The `SocketHandler` is configured based on `LogManager` properties (or their default values) except that the given target host and port arguments are used.

Parameters:
  `host` - target host.
  `port` - target port.
Throws:
  `IllegalArgumentException` - if the host or port are invalid.
  `IOException` - if we are unable to connect to the target host and port.

Method Detail

### close

    public void close()
               throws SecurityException

  Close this output stream.

  Overrides:
    `close` in class `StreamHandler`
  Throws:
    `SecurityException` - if a security manager exists and if the caller does not have `LoggingPermission("control")`.

### publish

    public void publish(LogRecord record)

  Format and publish a `LogRecord`.

  Overrides:
    `publish` in class `StreamHandler`
  Parameters:
    `record` - description of the log event

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.