Talend java routine to read a file from a path and convert it into Base64 for Salesforce ContentVersion VersionData field

TalendJavaRoutine.java

package routines;

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


public class ConvertToBase64 {
	
	public static String Base64FromFile(String filepath) {
        if (filepath == null) {
        	System.out.println(" filepath: " + filepath + " !");
        	return null;
        }
        try{ 
        	String encodedBase64 = Base64.getEncoder().encodeToString(Files.readAllBytes(new File(filepath).toPath()));
        	return encodedBase64;
        }catch(Exception err){
        	err.printStackTrace();
        	return null;
        }
    }
	
	public static String FileToString(String filepath) {
		System.out.println(" filepath: " + filepath + " !");
        if (filepath == null) {
        	System.out.println(" filepath: " + filepath + " !");
        	return null;
        }
        try{ 
        	String fileContent = "";
        	Path filePath = Paths.get(filepath);
        	fileContent = new String ( Files.readAllBytes(filePath) );
        	return fileContent;
        }catch(Exception err){
        	err.printStackTrace();
        	return null;
        }
    }
}