JAVA EE: Java Tutorial : Java IO (CharArrayReader(char[] buf, int offset, int length))

Wednesday 14 September 2016

Java Tutorial : Java IO (CharArrayReader(char[] buf, int offset, int length))

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https://www.youtube.com/watch?v=MGXGOfNrMkk&list=UUhwKlOVR041tngjerWxVccw

CharArrayReaderDemo.java

import java.io.CharArrayReader;
import java.io.IOException;

/*
 * public CharArrayReader(char[] buf, int offset, int length)
 * 
 * Parameters:
 * ----------- 
 * 
 * buf - Input buffer (not copied) 
 * offset - Offset of the first char to read 
 * length - Number of chars to read
 */

public class CharArrayReaderDemo
{

    public static void main(String[] args) throws IOException
    {
        CharArrayReader charArrayReader = null;
        try
        {

            char[] charArray = "Peter won the match".toCharArray();

            /*
             * Creates a CharArrayReader from the specified
             * array of chars.
             * 
             * The resulting reader will start reading at
             * the given offset. The total number of char
             * values that can be read from this reader will
             * be either length or buf.length-offset,
             * whichever is smaller.
             */
            charArrayReader = new CharArrayReader(charArray, 14, 5);

            int i;
            while ((i = charArrayReader.read()) != -1)
            {
                System.out.print((char) i);
            }
        }
        finally
        {
            if (charArrayReader != null)
            {
                charArrayReader.close();
            }
        }

    }

}