Read file as String

ReadFileAsString

import org.apache.commons.io.FileUtils;
   
...
   
File file = new File(this.getClass().getClassLoader()
        .getResource("/relativePath/fileName").toURI());
String st = FileUtils.readFileToString(file, "UTF-8");
        

if resource in same package as present file:        
        
File file = new File(this.getClass().getClassLoader()
        .getResource(MyClass.class.getPackage().getName()
        .replace('.', '/') + '/' + "filename.extension").toURI());