ByteBuffer: position(int newPosition)

 

import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.CharBuffer;

/**
 * Test asCharBuffer view.
 */
public class Main {
  public static void main(String[] argv) throws Exception {
    ByteBuffer byteBuffer = ByteBuffer.allocate(7).order(ByteOrder.BIG_ENDIAN);
    CharBuffer charBuffer = byteBuffer.asCharBuffer();

    byteBuffer.put(0, (byte) 0);
    byteBuffer.put(1, (byte) 'H');
    byteBuffer.put(2, (byte) 0);
    byteBuffer.put(3, (byte) 'i');
    byteBuffer.put(4, (byte) 0);
    byteBuffer.put(5, (byte) '!');
    byteBuffer.put(6, (byte) 0);

    println(byteBuffer);
    println(charBuffer);

    // now slice it differently
    byteBuffer.position(4);
    charBuffer = byteBuffer.asCharBuffer();

    println(byteBuffer);
    println(charBuffer);
  }

  // Print info about a buffer
  private static void println(Buffer buffer) {
    System.out.println("pos=" + buffer.position() + ", limit=" + buffer.limit() + ", capacity="
        + buffer.capacity() + ": '" + buffer.toString() + "'");
  }
}

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21.	ByteBuffer: limit()
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23.	ByteBuffer: order(ByteOrder bo)
24.	ByteBuffer: position()
25.	ByteBuffer: put(byte b)
26.	ByteBuffer: putChar(char ch)
27.	ByteBuffer: putDouble(double value)
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ByteBuffer: position(int newPosition) : ByteBuffer « java.nio « Java by API

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