Java tutorial
import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.util.Arrays; public class Main { public static void main(String[] argv) throws Exception { ByteBuffer bbuf = ByteBuffer.allocate(10); int capacity = bbuf.capacity(); // 10 System.out.println(capacity); bbuf.order(ByteOrder.nativeOrder()); bbuf.put("java2s.com".getBytes()); System.out.println(Arrays.toString(bbuf.array())); } }