Java学习(尚硅谷)IO流学习之其他流

package com.atguigu.java;

import org.junit.Test;

import java.io.*;
import java.util.Locale;


public class OtherStreamTest {

    

    //在单元测试方法中无法使用控制台输入字符串
    @Test
    public void test1(){

        BufferedReader br = null;
        try {
            InputStreamReader isr = new InputStreamReader(System.in);
            br = new BufferedReader(isr);
            while (true){
                String data=br.readLine();
                if (data.equalsIgnoreCase("e")||data.equalsIgnoreCase("exit")){
                    System.out.println("程序退出");
                    break;
                }else{
                    String upperCase = data.toUpperCase(Locale.ROOT);
                    System.out.println(upperCase);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (br!=null){

                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    

    
    @Test
    public void test2() throws IOException {
        //1.
        DataOutputStream dos = new DataOutputStream(new FileOutputStream("data.txt"));
        //2.
        dos.writeUTF("浙江大学");
        dos.flush();//刷新操作，将内存中数据写入文件
        dos.writeInt(23);
        dos.flush();
        dos.writeBoolean(true);
        dos.flush();
        //3.
        dos.close();
    }
    
    @Test
    public void test3() throws IOException {
        //1.
        DataInputStream dis = new DataInputStream(new FileInputStream("data.txt"));
        //2.
        String name = dis.readUTF();
        int age = dis.readInt();
        boolean isMale = dis.readBoolean();
        System.out.println("name="+name);
        System.out.println("age="+age);
        System.out.println("isMale="+isMale);

        //3.
        dis.close();
    }
}