使用 Scanner 取得輸入

import java.util.Scanner;

public class ScannerDemo {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("請輸入你的名字:");
System.out.printf("哈囉! %s\n", scanner.next());
System.out.print("請輸入一個數字:");
System.out.printf("你輸入了 %d \n", scanner.nextInt());
}
}