Base64EncodingManager.java

import java.io.UnsupportedEncodingException;
import java.util.Base64;

public class Base64EncodingManager {

	public static Base64EncodingManager instance;

	private Base64EncodingManager() {
	}

	public static Base64EncodingManager getInstance() {
		if (instance == null)
			instance = new Base64EncodingManager();
		return instance;
	}

	public String decode(String encodedText) {
		byte[] decodedBytes = Base64.getMimeDecoder().decode(encodedText);
		String result = "";
		try {
			result = new String(decodedBytes, "utf-8");
		} catch (UnsupportedEncodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return result;
	}

	public String encode(String plainText) {
		String result = ""; 
		try {
			result = Base64.getMimeEncoder().encodeToString(plainText.getBytes("utf-8"));
		} catch (UnsupportedEncodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		return result;
	}
}