如何在java中的字符串數組中拆分名字和姓氏

Question

我有一個包含15個全名的數組，如何將其分成2個數組（名和姓），下面是我的全名數組的方法

public static void readData(String file) throws FileNotFoundException {
    x = new Scanner(new File(file));
    //count number of names in the array
    int n = 0;
    while(x.hasNextLine()) {
        n++;
        x.nextLine();
    }
    //open another scanner to avoid null
    Scanner x1 = new Scanner(new File(file));
    name = new String[n];
    //get the array and print 
    for(int i = 0; i < name.length; i++ ) 
        name[i] = x1.nextLine();
    System.out.println(Arrays.toString(name));
}   

Answer 1

文件包含15個全名，如下所示：

Max Frei
Stephen King
Agatha Christie

如何閱讀：

final int total = 15;
String[] firstNames = new String[total];
String[] lastNames = new String[total];

try (Scanner scan = new Scanner(new File("file"))) {
    for (int i = 0; i < total; i++) {
        firstNames[i] = scan.next();
        lastNames[i] = scan.next();
    }
}

// firstNames: Max, Stephen, Agatha
// lastNames: Frei, King, Christie