ブランクスキャナnextLineが入力なしで行がスキップされる

Question

問題：ユーザからスキャナ（sc）で入力を受け取り、空のsc.nextLine（）を入力しなかった場合、前の行はスキップされる。この空の火を使用すると、後で使用するために変数が収集されることはありません。

今

System.out.println("Please enter the Airline name: "); 
    String airName = sc.nextLine(); 
    sc.nextLine(); <--------- 
    System.out.println("Please enter the Airline code: "); 
    String airCode = sc.nextLine(); 
    System.out.println("Please enter the Delta Aircraft: "); 
    String airCraft = sc.nextLine(); 
    System.out.println("Please enter the first class seat capacity: "); 
    int firstClass = sc.nextInt(); 
    System.out.println("Please enter the business class seat capacity: "); 
    int busiClass = sc.nextInt(); 
    System.out.println("Please enter the economy class seat capacity: "); 
    int econClass = sc.nextInt(); 
    System.out.println("Airline name: " + airName); 
    System.out.println("Airline code: " + airCode); 
    System.out.println("Delta Aircraft: " + airCraft); 
    //Splitting the first word from the rest of the string 
    String arr[] = airCraft.split(" ", 2); 
    String firstWord = arr[0]; 
    System.out.println(firstWord + " first class seat capacity: " + firstClass); 
    System.out.println(firstWord + " business class seat capacity: " + busiClass); 
    System.out.println(firstWord + " economy class seat capacity: " + econClass); 
    //Airline object 
    A8AirlineAircraftData airline = new A8AirlineAircraftData(airName, airCode, airCraft, firstClass, busiClass, econClass); 
    System.out.println(airName + " successfully added. Press Enter to continue."); 
    sc.nextLine();//Press Enter to continue 
    sc.nextLine(); 
    //A8MainMenu.mainMenu(sc); //return to main menu after Enter. 
    return airline; 

マイ出力：

Airline name: 
Airline code: QA 
Delta Aircraft: Boeing 787 
Boeing first class seat capacity: 16 
Boeing business class seat capacity: 25 
Boeing economy class seat capacity: 199 
successfully added. Press Enter to continue. 

Answer 1

私はスキャナを通過始め前のブランクsc.nextLine を配置するためになってしまいました。

sc.nextLine(); 
    System.out.println("Please enter the Airline name:"); 
    String airName = sc.nextLine();