[Chapter 24] 24.7 java.io.CharArrayReader (JDK 1.1)

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| Chapter 24 The java.io Package |

## 24.7 java.io.CharArrayReader (JDK 1.1)

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This class is a character input stream that uses a character array as the source of the characters it returns. You create a `CharArrayReader` by specifying the character array, or portion of an array, that it is to read from.

`CharArrayReader` defines the usual `Reader` methods, and supports the `mark()` and `reset()` methods.

Note that the character array you pass to the `CharArrayReader` is not copied by this class. This means that changes you make to the elements of the array after you create the input stream do affect the values read from the array.

`CharArrayReader()` is the character-array analog of `ByteArrayInputStream`, and is similar to `StringReader`.

    public class CharArrayReader extends Reader {
        // Public Constructors
                public CharArrayReader(char[] buf);
                public CharArrayReader(char[] buf, int offset, int length);
        // Protected Instance Variables
                protected char[] buf;
                protected int count;
                protected int markedPos;
                protected int pos;
        // Public Instance Methods
                public void close();  // Defines Reader
                public void mark(int readAheadLimit) throws IOException;  // Overrides Reader
                public boolean markSupported();  // Overrides Reader
                public int read() throws IOException;  // Overrides Reader
                public int read(char[] b, int off, int len) throws IOException;  // Defines Reader
                public boolean ready() throws IOException;  // Overrides Reader
                public void reset() throws IOException;  // Overrides Reader
                public long skip(long n) throws IOException;  // Overrides Reader
    }

### Hierarchy:

Object->Reader->CharArrayReader

java.io.ByteArrayOutputStream (JDK 1.0) |  | java.io.CharArrayWriter (JDK 1.1)