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Class java.io.CharArrayReader

Object
   |
   +----Reader
           |
           +----java.io.CharArrayReader

public class CharArrayReader

extends Reader

Version:

1.8, 07/01/98

Author:

Herb Jellinek

Since:

JDK1.1

buf

Character buffer

count

Number of valid characters in buffer

markedPos

Position of mark in buffer

pos

Current buffer position

java.io.CharArrayReader(char[])

Create an CharArrayReader from the specified array of chars.

java.io.CharArrayReader(char[], int, int)

Create an CharArrayReader from the specified array of chars.

close()

Close the stream.

mark(int)

Mark the present position in the stream.

markSupported()

Tell whether this stream supports the mark() operation, which it does.

read()

Read a single character.

read(char[], int, int)

Read characters into a portion of an array.

ready()

Tell whether this stream is ready to be read.

reset()

Reset the stream to the most recent mark, or to the beginning if it has never been marked.

skip(long)

Skip characters.

protected char[] buf

Character buffer

protected int count

Number of valid characters in buffer

protected int markedPos

Position of mark in buffer

protected int pos

Current buffer position

public CharArrayReader(char buf)

Create an CharArrayReader from the specified array of chars.

Parameters:

buf - Input buffer (not copied)

Since:

JDK1.1

public CharArrayReader(char buf,
                       int offset,
                       int length)

Create an CharArrayReader from the specified array of chars.

Parameters:

buf - Input buffer (not copied)

offset - Offset of the first char to read

length - Number of chars to read

Since:

JDK1.1

public void close()

Close the stream.

Overrides:

close in class Reader

Since:

JDK1.1

public void mark(int readAheadLimit) throws IOException

Mark the present position in the stream. Subsequent calls to reset() will reposition the stream to this point.

Parameters:

readAheadLimit - Limit on the number of characters that may be read while still preserving the mark. Because the stream's input comes from a character array, there is no actual limit; hence this argument is ignored.

Throws: IOException

If an I/O error occurs

Overrides:

mark in class Reader

Since:

JDK1.1

public boolean markSupported()

Tell whether this stream supports the mark() operation, which it does.

Overrides:

markSupported in class Reader

Since:

JDK1.1

public int read() throws IOException

Read a single character.

Throws: IOException

If an I/O error occurs

Overrides:

read in class Reader

Since:

JDK1.1

public int read(char b,
                int off,
                int len) throws IOException

Read characters into a portion of an array.

Parameters:

b - Destination buffer

off - Offset at which to start storing characters

len - Maximum number of characters to read

Returns:

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

Throws: IOException

If an I/O error occurs

Overrides:

read in class Reader

Since:

JDK1.1

public boolean ready() throws IOException

Tell whether this stream is ready to be read. Character-array readers are always ready to be read.

Throws: IOException

If an I/O error occurs

Overrides:

ready in class Reader

Since:

JDK1.1

public void reset() throws IOException

Reset the stream to the most recent mark, or to the beginning if it has never been marked.

Throws: IOException

If an I/O error occurs

Overrides:

reset in class Reader

Since:

JDK1.1

public long skip(long n) throws IOException

Skip characters.

Parameters:

n - The number of characters to skip

Returns:

The number of characters actually skipped

Throws: IOException

If an I/O error occurs

Overrides:

skip in class Reader

Since:

JDK1.1

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