Wednesday, 14 September 2016

Java Tutorial : Java IO (CharArrayReader-Copy to destArray)


Click here to watch in Youtube : 
https://www.youtube.com/watch?v=fVq-AEuwVW4&list=UUhwKlOVR041tngjerWxVccw

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

/*
 * public int read(char[] b, int off, int len)
 *                              throws IOException
 * 
 * Parameters:
 * ----------
 *  
 * b - Destination buffer 
 * off - Offset at which to start storing characters
 * len - Maximum number of characters to read
 */

public class CharArrayReaderDemo
{

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

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

            charArrayReader = new CharArrayReader(srcCharArray);

            char[] destCharArray = new char[10];

            /*
             * Reads characters into a portion of an array.
             * 
             * Returns: The actual number of characters
             * read, or -1 if the end of the stream has been
             * reached
             */
            int numberOfCharsRead = charArrayReader.read(destCharArray, 0, 5);
            System.out.println("numberOfCharsRead = " + numberOfCharsRead);

            for (int i = 0; i < destCharArray.length; i++)
            {
                System.out.print(destCharArray[i]);
            }

        }
        finally
        {
            if (charArrayReader != null)
            {
                charArrayReader.close();
            }
        }

    }

}
Output
numberOfCharsRead = 5
Peter
Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/JavaIODemo_CharArrayReader_Copy_to_destCharArray_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/JavaIODemo_CharArrayReader_Copy_to_destCharArray_App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/529c374293151c23da015b1ff76aad44139672b4/BasicJava/JavaIODemo_CharArrayReader_Copy_to_destCharArray_App/?at=master

See also:
  • All JavaEE Viedos Playlist
  • All JavaEE Viedos
  • All JAVA EE Links
  • Servlets Tutorial
  • All Design Patterns Links
  • JDBC Tutorial
  • Java Collection Framework Tutorial
  • JAVA Tutorial
  • Kids Tutorial
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