usingbuffers.java.svn-base

来自「·TFTPUtil ReadMe For additions, changes,」· SVN-BASE 代码 · 共 30 行

import java.nio.*;

public class UsingBuffers {

  private static void symmetricScramble(CharBuffer buffer){
    while(buffer.hasRemaining()) {
      buffer.mark();
      char c1 = buffer.get();
      char c2 = buffer.get();
      buffer.reset();
      buffer.put(c2).put(c1);
    }
  }
  public static void main(String[] args) {
    char[] data = "UsingBuffers".toCharArray();
    ByteBuffer bb = ByteBuffer.allocate(data.length * 2);
    CharBuffer cb = bb.asCharBuffer();
    cb.put(data);
    System.out.println(cb.rewind());
    symmetricScramble(cb);
    System.out.println(cb.rewind());
    symmetricScramble(cb);
    System.out.println(cb.rewind());
    /*
      "UsingBuffers",
      "sUniBgfuefsr",
      "UsingBuffers"
    */
  }
}