1. org.apache.commons.io.IOUtils
- closeQuietly ( )
- toString ( )
- copy ( )
- toByteArray ( )
- write ( )
- toInputStream ( )
- readLines ( )
- copyLarge ( )
- lineIterator ( )
- readFully ( )
2. org.apache.commons.io.FileUtils
- deleteDirectory ( )
- readFileToString ( )
- deleteQuietly ( )
- copyFile ( )
- writeStringToFile ( )
- forceMkdir ( )
- write ( )
- listFiles ( )
- copyDirectory ( )
- forceDelete ( )
3. org.apache.commons.lang.StringUtils
- isBlank ( )
- isNotBlank ( )
- isEmpty ( )
- isNotEmpty ( )
- equals ( )
- join ( )
- split ( )
- EMPTY
- trimToNull ( )
- replace ( )
4. org.apache.http.util.EntityUtils
- toString ( )
- consume ( )
- toByteArray
