字节流读取数据(一次读一个字节数据)
package com.czie.iot1913.lps.IO.InPutStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
/**
* FileName: FileInputStreamTest01
* Author: lps
* Date: 2022/3/23 21:17
* Sign:刘品水 Q:1944900433
*/
public class FileInputStreamTest01 {
public static void main(String[] args) throws IOException {
//创建字节输入流对象
FileInputStream fis = new FileInputStream("F:\\JavaCode\\fos.txt");
//调用字节输入流对象读数据的方法
/* //第一次读取数据
int by = fis.read();
System.out.println(by);
System.out.println((char) by);
//第二次读取数据
by = fis.read();
System.out.println(by);
System.out.println((char) by);
//在多读取两次
by = fis.read();
System.out.println(by);
System.out.println((char) by);*/
/* int by=fis.read();
while (by!=-1){
System.out.print((char)by);
by=fis.read();by = fis.read()
}*/
//优化上面的程序
int by;
while ((by = fis.read())!=-1){
System.out.print((char)by);
}
//释放资源
fis.close();
}
}