Encoding and Decoding string in java and javascript

• Encoding and Decoding string in java :

Library file need to import : import java.util.Base64;

Encoding :

String dataString = “Hello Java!”

String encodedString = Base64.getEncoder().encodeToString(dataString.getBytes());

Decoding :

byte[] decoded = Base64.getDecoder().decode(encodedString);
String decodedString = new String(decoded);

• Encoding and Decoding string in javaScript :

     Example : var str = “Need tips? Visit W3Schools!”; var str_esc = escape(str); document.write(str_esc + “<br>”) document.write(unescape(str_esc)); Output : Need%20tips%3F%20Visit%20W3Schools%21 Need tips? Visit W3Schools!