CODEWITHSUNDEEP
java
Shiladittya Chakraborty
Shiladittya Chakraborty

Reputation: 4418

Use of Base64 class in JDK7

I am trying to use Base64 class in JDK 7 but I am getting the error:

Base64 cannot be resolved

Why does eclipse throw this error?

I am using the code below:

byte[] imageData = Base64.getDecoder().decode(readFile(imagePart.getInputStream()));

even import statement also shows the same error : import java.util.Base64;

Is this class not available in JDK 7?

Upvotes: 6

Views: 40108

Answers (5)

Azat Nugusbayev
Azat Nugusbayev

Reputation: 1421

Base64.getDecoder().decode() is available from Java 1.8

Try to use Google Guava.

pom.xml

<dependency>
   <artifactId>guava</artifactId>
   <groupId>com.google.guava</groupId>
   <type>jar</type>
   <version>14.0.1</version>
</dependency>

Code Snippet

String inputContent = "Hello World";
String base64String = BaseEncoding.base64().encode(inputContent.getBytes("UTF-8"));
//decode
System.out.println("Base64:" + base64String);
byte[] contentInBytes = BaseEncoding.base64().decode(base64String);
System.out.println("Source content: " + new String(contentInBytes, "UTF-8"));//Hello World

Upvotes: 6

Henry
Henry

Reputation: 43788

From the documentation:

Since: 1.8

So no, it is not available in JDK 7.

Upvotes: 9

Zac
Zac

Reputation: 108

As stated java.util.Base64 is not available until 8.

However I find it worth noting that Android developers have access to android.util.Base64 at language level 7 (API 24) and the code is entirely self contained so you can copy and drop it into your project if you need Base64 and don't want to use a 3rd party like Apache. Just watch rights and usage and all that.

Upvotes: 0

predrags
predrags

Reputation: 444

If it is needed to specifically use JDK7 for your project, and you still need to use java.util.Base64 class, you can include in your project the code for that class from OpenJDK.

Source for this class is available at:
http://www.grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/8u40-b25/java/util/Base64.java?av=f

Base64.java file can be downloaded at:
http://www.grepcode.com/file_/repository.grepcode.com/java/root/jdk/openjdk/8u40-b25/java/util/Base64.java/?v=source&disposition=attachment

Upvotes: 6

awsome
awsome

Reputation: 2153

java.util.Base64 is available in Java 8 or better

In Java 7 you can use Apache Commons Codec

See here for examples http://www.rgagnon.com/javadetails/java-0598.html

Upvotes: 1

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