Java編程中獲取鍵盤輸入實現方法及註意事項

package com.wen201807.sort;
import java.util.Scanner;
public class Main {
        public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()) {
            int len = sc.nextInt();
            int[] array = new int[len];
            for(int i = 0; i < len; i++) {
                array[i] = sc.nextInt();
            }
                        display(array);
        }
    }
        public static void display(int[] array) {
        for(int i = 0; i < array.length - 1; i++) {
            System.out.print(array[i] + " ");
        }
        System.out.println(array[array.length - 1]);
    }
}

package Java;
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()) {
            int len = sc.nextInt();
            //sc.nextLine();
            int[] x = new int[len];
            int[] y = new int[len];
            for(int i = 0; i < len; i++) {
                String str = sc.next().trim();    //trim()函數去掉字元串首尾的空格
                //sc.nextLine();
                String[] strs = str.split(",");    //將坐標分開裝入數組
                x[i] = Integer.parseInt(strs[0]);
                y[i] = Integer.parseInt(strs[1]);
            }
            
            for(int i = 0; i < len; i++) {
                System.out.print(x[i] + " ");
                System.out.println();
            }
            for(int i = 0; i < len; i++) {
                System.out.print(y[i] + " ");
                System.out.println();
            }
        }
    }
    
}