package IO;

import org.junit.Test;

import java.io.*;

public class OtherStream {
    //从键盘输入字符串，当遇到e或者exit退出，其余情况转换成大写
    public static void main(String[] args) {
        BufferedReader br = null;
        try {
            InputStreamReader isr = new InputStreamReader(System.in);
            br = new BufferedReader(isr);

            while (true){
                System.out.println("please input the String: ");
                String data = br.readLine();
                if("e".equalsIgnoreCase(data) || "exit".equalsIgnoreCase(data)){
                    System.out.println("end the programme");
                    break;
                }
                String upperCase = data.toUpperCase();
                System.out.println(upperCase);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(br != null){
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }


    }

    //数据流
    @Test
    public void test(){
        DataOutputStream dos = null;
        try {
            dos = new DataOutputStream(new FileOutputStream("data.txt"));

            dos.writeUTF("hason");
            dos.flush();
            dos.writeInt(23);
            dos.flush();
            dos.writeBoolean(true);
            dos.flush();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(dos != null){
                try {
                    dos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }


    }

}