8、使用转换流处理标准输入

package Io;

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

public class TestSystem {
    public static void main(String[] args) {
        BufferedReader br = null;
        // 把字节流转为字符流
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
            String str = null;
            while ((str = br.readLine()) != null) {
                if (str.equals("exit"))
                    break;
                System.out.println(str);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (br != null)
                    br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}