![]() The entry point to Java 8's Base64 support is the 64 class.The following code snippet shows how to convert Base64 string to a JPG or PNG image using Java: Therefore, you need to follow these steps for the conversion: Save the data in a TXT file because of a long string.Besides that, you have the original byte. ![]() The output is a String, so the output needs 4/3*sizeof (char) bytes for the output String = 8/3. ![]() As you understand, Base64 encoding requires 4/3 of the input array length for the output. This time will will run the JVM with -Xmx8G key to see the actual memory consumption.The undocumented classes 64Encoder and 64Decoder should not be used ( explanation ). There is no Base64 encoder/decoder in the standard Java SDK class library up to Java 7. Base64Coder is a fast and compact Base64 encoder/decoder class.
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