nextLine方法在掃描儀

Question

可能重複：
Scanner issue when using nextLine after nextInt

爲什麼丈夫下的空sc.nextLine();所以有必要嗎？它並不等於任何東西，當然妻子也沒有這一行......但是如果沒有它，程序就不會運行。我的書評論它跳過結尾newLine字符。但我看不出有什麼可跳過的！

public class FileTest { 
    public static void main(String[] args) { 

    Scanner sc = new Scanner(System.in); 
    System.out.print("For your blended family, \n enter the wife's name"); 
    String wife = sc.nextLine(); 
    System.out.print("Enter the number of her children:"); 
    int herkids = sc.nextInt(); 

    System.out.print("Enter the husband's name:"); 
    //sc.nextLine(); // Why is this line so necessary? 
    String husband = sc.nextLine(); 
    System.out.print("Enter the number of his children:"); 
    int hisKids = sc.nextInt(); 

    System.out.println(wife + " and " + husband + " have " + (herkids + hisKids) + " children."); 

    } 
} 

Answer 1

檢查這個問題，

Scanner issue when using nextLine after nextXXX

看接受的答案，

「問題與input.nextInt（）命令時，它只能讀取int值。因此，當你繼續用input.nextLine（）讀取時，你會收到「\ n」回車鍵，所以要跳過這個，你必須添加input.nextLine（），希望現在應該清楚。