This is an example of how to decode Strings with the Base64 algorithm. We are using the org.apache.commons.codec.binary.Base64 class that provides Base64 encoding and decoding as defined by RFC 2045. Decoding with org.apache.commons.codec.binary.Base64 class implies that you should:
- Create a String.
- Get the bytes from the String, using
getBytes()API method of String. - Use
decodeBase64(byte[] base64Data)API method, using the byte array from the String to decode Base64 data into octets. - Print the decoded array, using the
toString(byte[] a)API method of Arrays.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import org.apache.commons.codec.binary.Base64;
import java.util.Arrays;
public class decodeBase64 {
public static void main(String[] args) {
String string = "SmF2YWNvZGVnZWVrcw==";
// Get bytes from string
byte[] byteArray = Base64.decodeBase64(string.getBytes());
// Print the decoded array
System.out.println(Arrays.toString(byteArray));
// Print the decoded string
String decodedString = new String(byteArray);
System.out.println(string + " = " + decodedString);
}
}
Output:
[74, 97, 118, 97, 99, 111, 100, 101, 103, 101, 101, 107, 115]
SmF2YWNvZGVnZWVrcw== = Javacodegeeks
This was an example of how to decode Strings with the Base64 algorithm in Java.
