Using Java Base64 encryption, decryption __java

Package com;
Import java.io.UnsupportedEncodingException;
Import Sun.misc.BASE64Decoder;
Import Sun.misc.BASE64Encoder;
		public class Demo {public static void main (string[] args) {String str = "Zhang";
		String base64=getbase64 (str);
		System.out.println (base64);
		String res = getFromBase64 (base64);
	System.out.println (RES);
		}//Encrypt public static string getBase64 (String str) {byte[] b=null;
		String S=null;
		try {b = str.getbytes ("Utf-8");
		catch (Unsupportedencodingexception e) {e.printstacktrace ();
		} if (b!=null) {s=new base64encoder (). Encode (b);
	return s;  
        }//Decrypt public static string GetFromBase64 (string s) {byte[] b = null;  
        String result = null;  
            if (s!= null) {Base64decoder decoder = new Base64decoder ();  
                try {b = Decoder.decodebuffer (s);  
            result = new String (b, "Utf-8"); catch (Exception e) {E.printstacktracE ();  
    } return result;
 }  

}

If the compiler complains,

Access Restriction:the method Encode (byte[]) from the type Characterencoder are not accessible due to restriction on Requi Red Library C:\Program Files\java\jre1.6.0_02\lib\rt.jar

An error occurred while calling Base64encoder and Base64decoder

The workaround is as follows

Eclipse under Window-->preferences-->java-->compiler-->error/warnings.
Select deprecated and restricted APIs. Change it to warning.
Change Forbidden and discouraged Reference and the IT to warning. (or as your need.)