Test buffer duplication : CharBuffer « File « Java Tutorial






  1. Java Tutorial
  2. File
  3. CharBuffer
import java.nio.CharBuffer;

/**
 * Test buffer duplication.
 */
public class MainClass {
  public static void main(String[] argv) throws Exception {
    CharBuffer buffer = CharBuffer.wrap("01234567");

    buffer.position(3).limit(6).mark().position(5);

    CharBuffer dupeBuffer = buffer.duplicate();

    buffer.clear();

    println(buffer);
    println(dupeBuffer);

    dupeBuffer.reset();
    println(dupeBuffer);

    dupeBuffer.clear();
    println(dupeBuffer);
  }

  private static void println(CharBuffer cb) {
    System.out.println("pos=" + cb.position() + ", limit=" + cb.limit() + ", capacity="
        + cb.capacity() + ": '" + cb + "'");
  }
}
/**/

pos=0, limit=8, capacity=8: '01234567'
pos=5, limit=6, capacity=8: '5'
pos=3, limit=6, capacity=8: '345'
pos=0, limit=8, capacity=8: '01234567'




11.43.CharBuffer
11.43.1.Buffer Equality
11.43.2.Use CharBuffer
11.43.3.Convert ByteBuffer to a CharBuffer
11.43.4.Use while loop to read a CharBuffer
11.43.5.Save and read text using FileChannel with CharBuffer
11.43.6.Test the effects of buffer flipping
11.43.7.Test buffer duplication
11.43.8.Create a CharBuffer and put in some string
11.43.9.Buffer slice
11.43.10.Wrap a char array to a CharBuffer
11.43.11.Flip a CharBuffer
11.43.12.Get array out of CharBuffer
11.43.13.Convert ByteBuffer to CharBuffer
11.43.14.Fill String to CharBuffer
11.43.15.CharBuffer warps a ByteBuffer