Java 8 : Base64 Encoding & Decoding

oracle java 8 Base64 Encoding & Decoding

                 The Base64 encoding and decoding is a long overdue JDK API feature. As part of Java 8 the Base64 encoding and decoding feature came into Java standard library. Earlier we were using private and unsupported sun.misc.BASE64Encoder and sun.misc.BASE64Decoder classes which are not part of standard API. In Java 8, we got java.util.Base64 class to perform Base64 encoding and decoding. The sample code on Base64 usage is given below.

package org.smarttechie;

import java.util.Base64;

public class Base64Sample {
public static void main(String args[]){

String str = "Welcome to see java.util.Base64";
Base64.Encoder base64Encoder= Base64.getEncoder();

//encoding byte array into base 64
byte[] byteArray = null;
try {
    byteArray = base64Encoder.encode(str.getBytes("UTF-8"));
    System.out.println("Base64 Encoded String : " + new String(byteArray,"UTF-8"));

    //decoding byte array into base64
    Base64.Decoder base64Decoder= Base64.getDecoder();
    byte[] strdec=base64Decoder.decode(byteArray);

   System.out.println("Base64 Decoded String : " + new String(strdec,"UTF-8"));
  } catch (UnsupportedEncodingException e) {

Siva Janapati is an Architect with experience in building Cloud Native Microservices architectures, Reactive Systems, Large scale distributed systems, and Serverless Systems. Siva has hands-on in architecture, design, and implementation of scalable systems using Cloud, Java, Go lang, Apache Kafka, Apache Solr, Spring, Spring Boot, Lightbend reactive tech stack, APIGEE edge & on-premise and other open-source, proprietary technologies. Expertise working with and building RESTful, GraphQL APIs. He has successfully delivered multiple applications in retail, telco, and financial services domains. He manages the GitHub( where he put the source code of his work related to his blog posts.

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Posted in Java
One comment on “Java 8 : Base64 Encoding & Decoding
  1. Anonymous says:

    Keep on writing, great job!

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