Codifica PDF em Base64 puro texto

codificaPdfEmBase64.java

import java.util.Base64;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

String filePath = "pdfTeste.pdf";
File file = new File(filePath);

byte[] bytes = Files.readAllBytes(file.toPath());
String encodedFile = Base64.getEncoder().encodeToString(bytes);
String outputFilePath = "base64purinhoPurinho.txt";
Files.write(Paths.get(outputFilePath), encodedFile.getBytes(), StandardOpenOption.CREATE);

return encodeFile

• Explicacao do codigo