![]() In this tutorial we will discuss how to Encode and Decode using Base64 using Google’s Guava Project Open Source library. ![]() Look at the below example to understand with and without padding and also how it can be encoded to the original form.Base64 Encoding and Decoding Examples in Java using Google Guava ![]() Many developers think that no padding encoded string cannot be decoded back to the original string.īut, it is wrong and Base64.Decode api provides flexibility to decode back. WithoutPadding() method helps to skip the padding of the output. If you do want to be decoded then encode without padding using withoutPadding(). ![]() On the other side, while decoding all extra padded characters will be discarded. Typically, an encoded string should be multiples of 3 otherwise it will be added with = character. Java 8 Base64 Encoding and Decoding With Paddingīy default, encoding pads with the '=' double equal operator if the encoded string length is not met the desired length. You need to explicitly cast to the String object.įinally, the decoded string is showing the content in the next line when the line separator encounters. encodeToString() method and it is having the characters from simple encoding characters set.īut, when decoded using decode() method that returns byte rather than a string. Let us see the example you will understand clearly.Įncoded string : V2VsY29tZSB0byBqYXZhcHJvZ3JhbXRvLmNvbSAKIGdvb2QgZGF5ĭecoded String : Welcome to Īs you see in the output, the actual input string is having a line separator. The encoded string will contain only "A-Za-z0-9+/" these characters set and considers the new line character as line breaker in decoding. This is a simple encoding technique in the Base64. Java 8 Base 64 Simple Encoding and Decoding Returns a Base64.Encoder that encodes using the URL and Filename safe type base64 encoding scheme. 3.7 static Base64.Encoder getUrlEncoder() Returns a Base64.Decoder that decodes using the URL and Filename safe type base64 encoding scheme. 3.6 static Base64.Decoder getUrlDecoder() Returns a Base64.Encoder that encodes using the MIME type base64 encoding scheme with specified line length and line separators. 3.5 static Base64.Encoder getMimeEncoder(int lineLength, byte lineSeparator) Returns a Base64.Encoder that encodes using the MIME type base64 encoding scheme. 3.4 static Base64.Encoder getMimeEncoder() Returns a Base64.Decoder that decodes using the MIME type base64 decoding scheme. 3.3 static Base64.Decoder getMimeDecoder() Returns a Base64.Encoder that encodes using the Basic type base64 encoding scheme. Returns a Base64.Decoder that decodes using the Basic type base64 encoding scheme. Use the below methods to get the right encoders and decoders for each type. It has two static inner classes and those are Base64.Encoder, Base64.Decoder. Java 8 Base64 Methodsīase64 is a base class for encoding and decoding. All of the classes are related to this are in 64 package. In java 8, We can use mainly 3 types of encoding and decoding capabilities as standard. This simplifies the encode and decode process without using the other third-party libraries. After a long time, java 8 is added with the builtin base64 encoding and decoding functionalities as part of JDK 8.
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