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jdk.io.PushbackReader

A character-stream reader that allows characters to be pushed back into the stream.

A character-stream reader that allows characters to be pushed back into the
stream.
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->pushback-readerclj

(->pushback-reader in)
(->pushback-reader in size)

Constructor.

Creates a new pushback reader with a pushback buffer of the given size.

in - The reader from which characters will be read - java.io.Reader size - The size of the pushback buffer - int

throws: java.lang.IllegalArgumentException - if size <= 0

Constructor.

Creates a new pushback reader with a pushback buffer of the given size.

in - The reader from which characters will be read - `java.io.Reader`
size - The size of the pushback buffer - `int`

throws: java.lang.IllegalArgumentException - if size <= 0
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closeclj

(close this)

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

throws: java.io.IOException - If an I/O error occurs

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

throws: java.io.IOException - If an I/O error occurs
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markclj

(mark this read-ahead-limit)

Marks the present position in the stream. The mark for class PushbackReader always throws an exception.

read-ahead-limit - 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. - int

throws: java.io.IOException - Always, since mark is not supported

Marks the present position in the stream. The mark
 for class PushbackReader always throws an exception.

read-ahead-limit - 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. - `int`

throws: java.io.IOException - Always, since mark is not supported
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mark-supportedclj

(mark-supported this)

Tells whether this stream supports the mark() operation, which it does not.

returns: true if and only if this stream supports the mark operation. - boolean

Tells whether this stream supports the mark() operation, which it does
 not.

returns: true if and only if this stream supports the mark operation. - `boolean`
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readclj

(read this)
(read this cbuf off len)

Reads characters into a portion of an array.

cbuf - Destination buffer - char[] off - Offset at which to start writing characters - int len - Maximum number of characters to read - int

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

throws: java.io.IOException - If an I/O error occurs

Reads characters into a portion of an array.

cbuf - Destination buffer - `char[]`
off - Offset at which to start writing characters - `int`
len - Maximum number of characters to read - `int`

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

throws: java.io.IOException - If an I/O error occurs
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readyclj

(ready this)

Tells whether this stream is ready to be read.

returns: 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. - boolean

throws: java.io.IOException - If an I/O error occurs

Tells whether this stream is ready to be read.

returns: 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. - `boolean`

throws: java.io.IOException - If an I/O error occurs
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resetclj

(reset this)

Resets the stream. The reset method of PushbackReader always throws an exception.

throws: java.io.IOException - Always, since reset is not supported

Resets the stream. The reset method of
 PushbackReader always throws an exception.

throws: java.io.IOException - Always, since reset is not supported
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skipclj

(skip this n)

Skips characters. This method will block until some characters are available, an I/O error occurs, or the end of the stream is reached.

n - The number of characters to skip - long

returns: The number of characters actually skipped - long

throws: java.lang.IllegalArgumentException - If n is negative.

Skips characters.  This method will block until some characters are
 available, an I/O error occurs, or the end of the stream is reached.

n - The number of characters to skip - `long`

returns: The number of characters actually skipped - `long`

throws: java.lang.IllegalArgumentException - If n is negative.
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unreadclj

(unread this c)
(unread this cbuf off len)

Pushes back a portion of an array of characters by copying it to the front of the pushback buffer. After this method returns, the next character to be read will have the value cbuf[off], the character after that will have the value cbuf[off+1], and so forth.

cbuf - Character array - char[] off - Offset of first character to push back - int len - Number of characters to push back - int

throws: java.io.IOException - If there is insufficient room in the pushback buffer, or if some other I/O error occurs

Pushes back a portion of an array of characters by copying it to the
 front of the pushback buffer.  After this method returns, the next
 character to be read will have the value cbuf[off], the
 character after that will have the value cbuf[off+1], and
 so forth.

cbuf - Character array - `char[]`
off - Offset of first character to push back - `int`
len - Number of characters to push back - `int`

throws: java.io.IOException - If there is insufficient room in the pushback buffer, or if some other I/O error occurs
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