Java tutorial
import java.nio.CharBuffer; import java.util.Arrays; public class Main { public static void main(String[] args) { CharBuffer cb1 = CharBuffer.allocate(50); cb1.append("java2s.com"); cb1.rewind(); System.out.println(cb1.charAt(2)); System.out.println(Arrays.toString(cb1.array())); CharBuffer cb2 = cb1.compact(); System.out.println(Arrays.toString(cb2.array())); } }