仿寫Scanner類的功能代碼

利用字節流包裝成字符流再升級成爲帶緩衝區的字符流來仿造Scanner，代碼如下：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Test106 {

    public static void main(String[] args) {
        //將System.in轉換爲字符流對象
        InputStreamReader isr = new InputStreamReader(System.in);
        //用緩衝流進行包裝
        BufferedReader br = new BufferedReader(isr);
        System.out.println("please input your name:");
        try {
            String str1 = br.readLine();
            System.out.println("please input your age");
            String str2 = br.readLine();

            System.out.println("name:"+str1);
            System.out.println("age:"+str2);

            br.close();
            isr.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

沒錯，就是這樣，運行就可以輸入了：

please input your name:
嫖順
please input your age
20
name:嫖順
age:20