[paty]

Can anyone explain me what is the meaning behind following 5 lines in core java ?

Code:

String file=new String(dataBytes);
String saveFile=file.substring(file.indexOf("filename=\"")+10);
saveFile=saveFile.substring(0,saveFile.indexOf("\n"));
saveFile=saveFile.substring(saveFile.lastIndexOf("\\")+1,saveFile.indexOf("\"") );
int lastIndex=contentType.lastIndexOf("=");