Question

I want to get data form text files ,and I use Scanner to get data form text file.
It’s profile save pattern

name
status
friend
friend
.
.
(Blank line)

Blank Line is separate each profile.(friend will looping till next line is a Blank Line)

john 
happy
james

james
sad
john

And i code to get file form text like this

try{
    Scanner fileIn = new Scanner(new FileReader("testread.txt"));
    while(fileIn.hasNextLine()){           
         String line = fileIn.nextLine();
         String linename = fileIn.nextLine();
         String statusline = fileIn.nextLine();
         println("name "+linename);
         println("status "+statusline);
         while(/*I asked at this*/)){
             String friendName = fileIn.nextLine();
             println("friend "+friendName); 
         }                              
    }
}catch(IOException e){
    println("Can't open file");
}

What condition that I should use to detect blank line between profile?

Answer 1

You can implement custom function like below which will return you nextLine if it is not empty.

 public static String skipEmptyLines(Scanner fileIn) {
    String line = "";
    while (fileIn.hasNext()) {
        if (!(line = fileIn.nextLine()).isEmpty()) {
            return line;
        }
    }
    return null;
}