Implements abstract java.io.Reader.close.

Implements java.io.Closeable.close.

Doc from java.io.Reader.close.

Closes the stream and releases any system resources associated with it. Once the stream has been closed, further read(), ready(), mark(), reset(), or skip() invocations will throw an IOException. Closing a previously closed stream has no effect.

Annotations

@Override

Exceptions

IOException:

If an I/O error occurs

Overrides java.io.Reader.mark.

Doc from java.io.Reader.mark.

Marks the present position in the stream. Subsequent calls to reset() will attempt to reposition the stream to this point. Not all character-input streams support the mark() operation.

Parameters

readAheadLimit:int

Limit on the number of characters that may be read while still preserving the mark. After reading this many characters, attempting to reset the stream may fail.

Annotations

@Override

Exceptions

IOException:

If the stream does not support mark(), or if some other I/O error occurs

Overrides java.io.Reader.markSupported.

Doc from java.io.Reader.markSupported.

Tells whether this stream supports the mark() operation. The default implementation always returns false. Subclasses should override this method.

Returns:boolean

true if and only if this stream supports the mark operation.

Annotations

@Override

Overrides java.io.Reader.read.

Doc from java.io.Reader.read.

Reads a single character. This method will block until a character is available, an I/O error occurs, or the end of the stream is reached.

Subclasses that intend to support efficient single-character input should override this method.

Returns:int

The character read, as an integer in the range 0 to 65535 (0x00-0xffff), or -1 if the end of the stream has been reached

Annotations

@Override

Exceptions

IOException:

If an I/O error occurs

Overrides java.io.Reader.read.

Doc from java.io.Reader.read.

Reads characters into an array. This method will block until some input is available, an I/O error occurs, or the end of the stream is reached.

If the length of cbuf is zero, then no characters are read and 0 is returned; otherwise, there is an attempt to read at least one character. If no character is available because the stream is at its end, the value -1 is returned; otherwise, at least one character is read and stored into cbuf.

Parameters

cbuf:char[]

Destination buffer

Returns:int

The number of characters read, or -1 if the end of the stream has been reached

Annotations

@Override

Exceptions

IOException:

If an I/O error occurs

Implements abstract java.io.Reader.read.

Doc from java.io.Reader.read.

Reads characters into a portion of an array. This method will block until some input is available, an I/O error occurs, or the end of the stream is reached.

If len is zero, then no characters are read and 0 is returned; otherwise, there is an attempt to read at least one character. If no character is available because the stream is at its end, the value -1 is returned; otherwise, at least one character is read and stored into cbuf.

Parameters

cbuf:char[]

Destination buffer

off:int

Offset at which to start storing characters

rlen:int

Maximum number of characters to read

Returns:int

The number of characters read, or -1 if the end of the stream has been reached

Annotations

@Override

Exceptions

IOException:

If an I/O error occurs

Overrides java.io.Reader.ready.

Doc from java.io.Reader.ready.

Tells whether this stream is ready to be read.

Returns:boolean

True if the next read() is guaranteed not to block for input, false otherwise. Note that returning false does not guarantee that the next read will block.

Annotations

@Override

Exceptions

IOException:

If an I/O error occurs

Overrides java.io.Reader.reset.

Doc from java.io.Reader.reset.

Resets the stream. If the stream has been marked, then attempt to reposition it at the mark. If the stream has not been marked, then attempt to reset it in some way appropriate to the particular stream, for example by repositioning it to its starting point. Not all character-input streams support the reset() operation, and some support reset() without supporting mark().

Annotations

@Override

Exceptions

IOException:

If the stream has not been marked, or if the mark has been invalidated, or if the stream does not support reset(), or if some other I/O error occurs

Overrides java.io.Reader.skip.

Doc from java.io.Reader.skip.

Skips characters. This method will block until some characters are available, an I/O error occurs, or the end of the stream is reached. If the stream is already at its end before this method is invoked, then no characters are skipped and zero is returned.

Parameters

n:long

The number of characters to skip

Returns:long

The number of characters actually skipped

Annotations

@Override

Exceptions

IOException:

If an I/O error occurs