Encoding as Base64 in Java
base64, decode, encode, java
Solution
You need to change the import of your class:
import org.apache.commons.codec.binary.Base64;
And then change your class to use the Base64 class.
Here's some example code:
byte[] encodedBytes = Base64.encodeBase64("Test".getBytes());
System.out.println("encodedBytes " + new String(encodedBytes));
byte[] decodedBytes = Base64.decodeBase64(encodedBytes);
System.out.println("decodedBytes " + new String(decodedBytes));
Then read why you shouldn't use sun.* packages.
Update (2016-12-16)
You can now use `java.util.Base64` with Java 8. First, import it as you normally do:
import java.util.Base64;
Then use the Base64 static methods as follows:
byte[] encodedBytes = Base64.getEncoder().encode("Test".getBytes());
System.out.println("encodedBytes " + new String(encodedBytes));
byte[] decodedBytes = Base64.getDecoder().decode(encodedBytes);
System.out.println("decodedBytes " + new String(decodedBytes));
If you directly want to encode string and get the result as encoded string, you can use this:
String encodeBytes = Base64.getEncoder().encodeToString((userName + ":" + password).getBytes());
See Java documentation for Base64 for more.
Problem
I need to encode some data in the Base64 encoding in Java. How do I do that? What is the name of the class that provides a Base64 encoder? I tried to use the `sun.misc.BASE64Encoder` class, without success. I have the following line of Java 7 code: ``` wr.write(new sun.misc.BASE64Encoder().encode(buf)); ``` I'm using Eclipse. Eclipse marks this line as an error. I imported the required libraries: ``` import sun.misc.BASE64Encoder; import sun.misc.BASE64Decoder; ``` But again, both of them are shown as errors. I found a similar post here. I used Apache Commons as the solution suggested by including: ``` import org.apache.commons.*; ``` and importing the JAR files downloaded from: http://commons.apache.org/codec/ But the problem still exists. Eclipse still shows the errors previously mentioned. What should I do?