java Io测试

package com.Test.Demo.Test;

import java.io.*;
import java.util.Scanner;

public class IoTest {
    public static void main(String[] args) throws IOException {
        /*File file = new File("E:\\Debug\\12345\\111.txt");
        File file1= new File("E:\\Debug\\12345\\222.txt");
        //文件字节输入输出流
        InputStream inputStream = new FileInputStream(file1);
        OutputStream     stream = new FileOutputStream(file,true); //追加写入
        *//*int b = 0;
        while((b=inputStream.read())!=-1){
            stream.write(b);
        }*//*
        byte[] bytes1 = new byte[10244];
        inputStream.read(bytes1);
        stream.write(bytes1);
        String string = "\n13dwdsdsd";
        byte[] bytes = string.getBytes();
        stream.write(bytes);
        stream.flush();
        inputStream.close();
        stream.close();
        //文件字符输入输出流
        Writer writer = new FileWriter("E:\\Debug\\12345\\444.txt",true);
        Reader reader = new FileReader("E:\\Debug\\12345\\222.txt");
        char[] chars = new char[1000];
        reader.read(chars);
        writer.write(chars);
        writer.flush();
        reader.close();
        writer.close();*/
        //打印字节流
//        PrintStream printStream = new PrintStream(new FileOutputStream("E:\\Debug\\12345\\444.txt"));
        //今后在输出时，都可以用打印流输出
//        Scanner scanner = new Scanner(new FileInputStream("E:\\Debug\\12345\\444.txt"));
//        PrintWriter pri = new  PrintWriter(new FileWriter("E:\\Debug\\12345\\124.txt"));
//        scanner.useDelimiter("\n");
//        while(scanner.hasNext()){
//            String st=scanner.next();
//            pri.print(st);
//        }
//        pri.flush();
//        pri.close();
        /*pri.println(1213);
        pri.println("sfsdffs");
        pri.print(new A());*/

        //以后读带有空格的数据，可以用以下的格式读取
       /* BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        String s=bufferedReader.readLine();
        System.out.println(s);
        int t = Integer.parseInt(s);
        System.out.println(t);
        bufferedReader.close();*/
        //以后读不带空格的 扫描流最方便 也可以设置分隔符
        Scanner scanf = new Scanner(System.in);
        scanf.useDelimiter("\n");
        String  t= scanf.next();
        System.out.print(t);

    }
}