Criação de Diretório

Verificando se o diretorio existe:

boolean exists = (new File(“filename”)).exists();

if (exists) {

// File or directory exists

} else {

// File or directory does not exist

}

Criando um diretorio:

// Create a directory; all ancestor directories must exist

boolean success = (new File(“directoryName”)).mkdir();

if (!success) {

// Directory creation failed

}

// Create a directory; all non-existent ancestor directories are
// automatically created
success = (new File("directoryName")).mkdirs();
if (!success) {
    // Directory creation failed
}