OnJava8-Examples/newio/IntBufferDemo.java

// newio/IntBufferDemo.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
// Manipulating ints in a ByteBuffer with an IntBuffer
import java.nio.*;

public class IntBufferDemo {
  private static final int BSIZE = 1024;
  public static void main(String[] args) {
    ByteBuffer bb = ByteBuffer.allocate(BSIZE);
    IntBuffer ib = bb.asIntBuffer();
    // Store an array of int:
    ib.put(new int[]{ 11, 42, 47, 99, 143, 811, 1016 });
    // Absolute location read and write:
    System.out.println(ib.get(3));
    ib.put(3, 1811);
    // Setting a new limit before rewinding the buffer.
    ib.flip();
    while(ib.hasRemaining()) {
      int i = ib.get();
      System.out.println(i);
    }
  }
}
/* Output:
99
11
42
47
1811
143
811
1016
*/