java初學（六）文件讀寫 複製文件 IO流

package cn.wan;



import java.io.*;


public class Main {
    public static void main(String[] args) throws IOException {
        /*FileOutputStream fileOutputStream = new FileOutputStream("text.txt");
        for (int i = 0; i < 2048; i++) {
            fileOutputStream.write(i % 94 + 33);
        }
        fileOutputStream.close();*/

        FileInputStream fileInputStream = new FileInputStream("C:/Users/39657/Desktop/page1.png");
        FileOutputStream fileOutputStream = new FileOutputStream("page1.png");
        byte[] bytes = new byte[1024];
        while (true) {
            int len = fileInputStream.read(bytes);
            System.out.println(len);
            if (len != -1) {
                fileOutputStream.write(bytes);
            } else {
                break;
            }
        }
        fileOutputStream.close();
        fileInputStream.close();
    }

}