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ת http://jiangzhengjun.javaeye.com/blog/506952
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import junit.framework.TestCase;
/**
* ±àÂëÓë½âÂë²âÊÔ
* @author jzj
*/
public class TestEncodeDecode extends TestCase {
 private char chineseChar = 'ÖÐ';
 private char englishChar = 'a';
 /**
 * Java³ÌÐòÖеÄ×Ö·û¶¼ÊÇÕ¼Óöþ¸ö×Ö½Ú£¬ÒòΪ char ÀàÐͺñÈË«×Ö½ÚµÄÎÞ·ûºÅÕûÊý
 */
 public void testCharToUnicode() {
  //Ê®½øÖÆUncode±àÂë
  System.out.println((int) chineseChar);//20013
  System.out.println((int) englishChar);//97
  //Ê®Áù½øÖÆUncode±àÂë
  System.out
    .println(Integer.toHexString((int) chineseChar).toUpperCase());//4E2D
  System.out
    .println(Integer.toHexString((int) englishChar).toUpperCase());//61
  //¶þ½øÖÆUncode±àÂë
  System.out.println(Integer.toBinaryString((int) chineseChar));//100111000101101
  System.out.println(Integer.toBinaryString((int) englishChar));//1100001
 }
 /**
 * ²»¹ÜÊÇÖÐÎÄ»¹ÊÇÓ¢Îͼ»¹ÊÇÆäËû×Ö·û£¬Ã¿¸ö×Ö·û¶¼ÊÇÕ¼ÓÃÁ½¸ö×Ö½Ú£¬Ó¢ÎÄ×Ö·ûµÄ
 * UTF-16±àÂëÓëUnicode±àÂëÊÇÒ»ÑùµÄ£¬Ö»²»¹ýUTF-16ÔÚ±àÂëʱ»áÔÚÂëÁ÷ǰ¼ÓÉÏ"FE FF"Á½¸ö×Ö½ÚµÄÄÚÈÝ£¬
 * ±íʾ×Ö·ûÊÇÒÔUTF-16¸ñʽ´æ´¢µÄ£¬ÔÚ¶Áȡʱ³ÌÐò¾Í»áÖªµÀÊÇUTF-16±àÂëµÄ×Ö·û
 */
 public void testCharToUTF16() {
  try {
   //--ÖÐÎÄ×Ö·ûתUTF-16
   byte[] encodeArr = String.valueOf(chineseChar).getBytes("UTF-16");
   //Ê®½øÖƱàÂëÊä³ö
   for (int i = 0; i < encodeArr.length; i++) {
    //-2 -1 78 45
    Syst


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