7. 写个程序，要求创建一个文件，写入从键盘输入的一串字符，然后再读该文件并将文件内容显示在屏幕上。(18分)

import java.io.*;

class MyFileIo{

public static void main(String args[]){

FileInputStream fin;

FileOutputStream fout;

char ch;

int data;

try{

fin = new FileInputStream(FileDescriptor.in);

fout = new FileOutputStream(“myfile1”);

System.out.println(“请输入一串字符以#结束：”);

while((ch = (char)fin.read()) != ‘#’)

Fout.write(ch);

fin.close();

fou.close();

System.out.print(“”);

fin = new FileInputStream(“myfile1”);

fout = new FileOutpurStream(FileDescriptor.out);

while(fin.available() > 0){

data = fin.read();

fou.write(data);

}

fin.close();

fout.close();

}catch(FileNotFoundException e){

System.out.println(“File not found!”);

}carch(IOException e){}

}

}