doubleloop.java

while (sc.hasNextLine()){
  String line = sc.nextLine();
  if (line.isEmpty()){
     continue;
  } else {
   String node = nextLine;
   String anotherLine = sc.nextLine();
   while (!anotherLine.isEmpty()) {
    String[] neighborInfo = anotherLine.split("\\s+");
    String neighborNode = neighborInfo[1];
    int edgeWeight = Integer.parseInt(neighborInfo[2]);
    anotherLine = sc.nextLine();
    }
  }
}