package day03;
import java.io.*;
public class Reader1{
public static void main(String [] args) throws Exception{
FileReader read = new FileReader("Demo.txt");
int ch = 0;
while((ch=read.read())!=-1)
System.out.println("ch="+ch); read.close();
}
}
java为什么会用-1判断存储内容的结束呢？
原文：http://www.cnblogs.com/meng84201/p/3564450.html