@@ -0,0 +1,62 @@
+package MD5;
+import java.security.MessageDigest;
+/**
+ * 采用MD5加密解密
+ * @author tfq
+ * @datetime 2011-10-13
+ */
+public class MD5Util {
+
+	/***
+	 * MD5加码 生成32位md5码
+	 */
+	public static String string2MD5(String inStr){
+		MessageDigest md5 = null;
+		try{
+			md5 = MessageDigest.getInstance("MD5");
+		}catch (Exception e){
+			System.out.println(e.toString());
+			e.printStackTrace();
+			return "";
+		}
+		char[] charArray = inStr.toCharArray();
+		byte[] byteArray = new byte[charArray.length];
+
+		for (int i = 0; i < charArray.length; i++)
+			byteArray[i] = (byte) charArray[i];
+		byte[] md5Bytes = md5.digest(byteArray);
+		StringBuffer hexValue = new StringBuffer();
+		for (int i = 0; i < md5Bytes.length; i++){
+			int val = ((int) md5Bytes[i]) & 0xff;
+			if (val < 16)
+				hexValue.append("0");
+			hexValue.append(Integer.toHexString(val));
+		}
+		return hexValue.toString();
+
+	}
+
+	/**
+	 * 加密解密算法 执行一次加密，两次解密
+	 */ 
+	public static String convertMD5(String inStr){
+
+		char[] a = inStr.toCharArray();
+		for (int i = 0; i < a.length; i++){
+			a[i] = (char) (a[i] ^ 't');
+		}
+		String s = new String(a);
+		return s;
+
+	}
+
+	// 测试主函数
+	public static void main(String args[]) {
+		String s = new String("http://hao.360.cn/next.html?1006");
+		System.out.println("原始：" + s);
+		System.out.println("MD5后：" + string2MD5(s));
+		System.out.println("加密的：" + convertMD5(s));
+		System.out.println("解密的：" + convertMD5(convertMD5(s)));
+
+	}
+}
@@ -0,0 +1,11 @@
+package print游戏;
+
+public class Split {
+	public static void main(String[] args) {
+		String ab="addd::ba";
+		for (String string : ab.split("::")) {
+			System.out.println(string);
+		}
+	}
+
+}