javax.mail.util
类 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.

从类 java.io.ByteArrayInputStream 继承的字段

buf, count, mark, pos

构造方法摘要

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).

从类 java.io.ByteArrayInputStream 继承的方法

available, close, mark, markSupported, read, read, reset, skip

从类 java.io.InputStream 继承的方法

read

从类 java.lang.Object 继承的方法

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.

构造方法详细信息

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.

指定者：

接口 SharedInputStream 中的 getPosition

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.

指定者：

接口 SharedInputStream 中的 newStream

参数：

start - the starting position

end - the ending position + 1

返回：

the new stream