SharedByteArrayInputStream (Java EE 5 SDK)

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Java EE 5 SDK

深圳电信培训中心.徐海蛟老师.

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摘要: 嵌套 | 字段 | 构造器 | 方法

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javax.mail.util Class SharedByteArrayInputStream

java.lang.Object
  java.io.InputStream
      java.io.ByteArrayInputStream
          javax.mail.util.SharedByteArrayInputStream

所有已实现的接口:: Closeable, SharedInputStream

public class SharedByteArrayInputStream
extends ByteArrayInputStream
implements SharedInputStream

A ByteArrayInputStream that implements the SharedInputStream interface, allowing the underlying byte array to be shared between multiple readers.

从以下版本开始:: JavaMail 1.4
版本:: 1.5, 07/05/04
作者:: Bill Shannon

字段摘要
`protected int`	`start` Position within shared buffer that this stream starts at.

Fields inherited from class java.io.ByteArrayInputStream
`buf, count, mark, pos`

构造器摘要
`SharedByteArrayInputStream(byte[] buf)` Create a SharedByteArrayInputStream representing the entire byte array.
`SharedByteArrayInputStream(byte[] buf, int offset, int length)` Create a SharedByteArrayInputStream representing the part of the byte array from `offset` for `length` bytes.

方法摘要
`long`	`getPosition()` Return the current position in the InputStream, as an offset from the beginning of the InputStream.
`InputStream`	`newStream(long start, long end)` Return a new InputStream representing a subset of the data from this InputStream, starting at `start` (inclusive) up to `end` (exclusive).

类方法继承 java.io.ByteArrayInputStream
`available, close, mark, markSupported, read, read, reset, skip`

类方法继承 java.io.InputStream
`read`

类方法继承 java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

字段详细信息

start

protected int start

Position within shared buffer that this stream starts at.

构造器详细信息

SharedByteArrayInputStream

public SharedByteArrayInputStream(byte[] buf)

Create a SharedByteArrayInputStream representing the entire byte array.

参数:: buf - the byte array

SharedByteArrayInputStream

public SharedByteArrayInputStream(byte[] buf,
                                  int offset,
                                  int length)

Create a SharedByteArrayInputStream representing the part of the byte array from offset for length bytes.

参数:: buf - the byte array; offset - offset in byte array to first byte to include; length - number of bytes to include

方法详细信息

getPosition

public long getPosition()

Return the current position in the InputStream, as an offset from the beginning of the InputStream.

规范说明:: getPosition in interface SharedInputStream

返回:: the current position

newStream

public InputStream newStream(long start,
                             long end)

Return a new InputStream representing a subset of the data from this InputStream, starting at start (inclusive) up to end (exclusive). start must be non-negative. If end is -1, the new stream ends at the same place as this stream. The returned InputStream will also implement the SharedInputStream interface.

规范说明:: newStream in interface SharedInputStream

参数:: start - the starting position; end - the ending position + 1
返回:: the new stream

概述