19.4. 使用FileOutputStream类写入数据到文件

Liu4.java

package com.a51work.cn;

import java.io.File;
import java.io.FileInputStream;

public class Liu4 {
 public static void main(String[] args) throws Exception {
  File fr = new File("D:\\\\GitHub/hujianli.txt");
  FileInputStream fis = new FileInputStream(fr);
  char ch;
  for (int i = 0; i < fr.length(); i++) {
   ch=(char)fis.read();
   System.out.print(ch);

  }
 }
}

/*
abcdefghijklmnopqrstuvwxyz
*/