Base64 Decode Java with Our Free Tool

Below is a list of libraries that support Base64 encoding and decoding in Java along with sample code for each library.

1. Java Standard Library (Java 8 and above)

Java 8 and above provide the Base64 class in the java.util package.

import java.util.Base64;

public class Base64Example {
    public static void main(String[] args) {
        String originalInput = "test input";
        
        // Encode
        String encodedString = Base64.getEncoder().encodeToString(originalInput.getBytes());
        System.out.println("Encoded: " + encodedString);
        
        // Decode
        byte[] decodedBytes = Base64.getDecoder().decode(encodedString);
        String decodedString = new String(decodedBytes);
        System.out.println("Decoded: " + decodedString);
    }
}
    

2. Apache Commons Codec

The Apache Commons Codec library provides utilities for Base64 encoding and decoding.

import org.apache.commons.codec.binary.Base64;

public class Base64Example {
    public static void main(String[] args) {
        String originalInput = "test input";
        
        // Encode
        String encodedString = new String(Base64.encodeBase64(originalInput.getBytes()));
        System.out.println("Encoded: " + encodedString);
        
        // Decode
        byte[] decodedBytes = Base64.decodeBase64(encodedString.getBytes());
        String decodedString = new String(decodedBytes);
        System.out.println("Decoded: " + decodedString);
    }
}
    

Add the dependency to pom.xml (Maven):

<dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>1.15</version>
</dependency>
    

3. Bouncy Castle

Bouncy Castle is a powerful encryption library that supports Base64 along with many other encryption algorithms.

import org.bouncycastle.util.encoders.Base64;

public class Base64Example {
    public static void main(String[] args) {
        String originalInput = "test input";
        
        // Encode
        String encodedString = new String(Base64.encode(originalInput.getBytes()));
        System.out.println("Encoded: " + encodedString);
        
        // Decode
        byte[] decodedBytes = Base64.decode(encodedString.getBytes());
        String decodedString = new String(decodedBytes);
        System.out.println("Decoded: " + decodedString);
    }
}
    

Add the dependency to pom.xml (Maven):

<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk15on</artifactId>
    <version>1.70</version>
</dependency>
    

4. Guava

Google's Guava library also provides utilities for Base64.

import com.google.common.io.BaseEncoding;

public class Base64Example {
    public static void main(String[] args) {
        String originalInput = "test input";
        
        // Encode
        String encodedString = BaseEncoding.base64().encode(originalInput.getBytes());
        System.out.println("Encoded: " + encodedString);
        
        // Decode
        byte[] decodedBytes = BaseEncoding.base64().decode(encodedString);
        String decodedString = new String(decodedBytes);
        System.out.println("Decoded: " + decodedString);
    }
}
    

Add the dependency to pom.xml (Maven):

<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>31.1-jre</version>
</dependency>
    

Welcome to our Base64 Decode Java tool, the ultimate solution to Base64 Decode Java quickly and easily. Whether you need to convert binary data for safe transmission or storage, our tool provides a simple and efficient way to decode your data from Base64 format.

Why Use Base64 Encoding?

Base64 encoding is a method of converting binary data into a text format using 64 characters. This encoding scheme is especially useful when you need to transfer or store data over media designed to handle text, such as email or JSON files. Base64 ensures your data remains intact and unmodified during transport.

Key Features of Our Base64 Decoding Tool

Simple and Fast Decoding

Our tool makes it incredibly easy to Base64 Decode Java. Simply enter your data, click the "Decode" button, and get your Base64 decoded result instantly. No complex configurations or technical knowledge required.

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Advanced Options

Character Set Selection

While Base64 encoding does not inherently include character set information, our tool allows you to specify the character set used during encoding. Commonly, UTF-8 is used, but other options are available. If unsure, try the auto-detect option for the best results.

Live Decoding Mode

Enable live mode to see your data decoded in real-time using your browser’s built-in JavaScript functions. This feature supports the UTF-8 character set and does not send data to our servers, offering enhanced privacy.

How to Base64 Decode Java

Follow these simple steps to Base64 Decode Java:

1. Enter your data:Paste your text or binary data into the input field.
2. Click "Decode":Hit the "Decode" button to convert your data from Base64 format.
3. Copy the result:Your decoded data will appear instantly. Copy it for use in your applications.

Example of Base64 Decoding

Here’s a quick example. Decoding the Base64 string "SGVsbG8sIFdvcmxkIQ==" yields:

Hello, World!

In this example, the Base64 encoded string "SGVsbG8sIFdvcmxkIQ==" is decoded to "Hello, World!", providing a simple and efficient way to convert Base64 data back to its original text format.