05 IO流（二）——IO流标准流程

import java.io.File;
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.IOException;
public class Test
{
	public static void main(String[] args) throws IOException{
		//选择源
		File src = new File("C:\\Users\\live\\Desktop\\课堂笔记和资料\\a.txt");
		System.out.println(src.getAbsolutePath());
		//选择流:根据源文件来选择合适的流
		InputStream is = new FileInputStream(src);
		//操作
		
		int data1;
		int data2;
		int data3;
		int data4;
		int data5;
		
		data1 = is.read();
		data2 = is.read();
		data3 = is.read();
		data4 = is.read();
		data5 = is.read();
		
		System.out.println((char)data1);
		System.out.println((char)data2);
		System.out.println((char)data3);
		System.out.println((char)data4);
		System.out.println((char)data5);
		//关闭流
		is.close();
	}
	
}

int tmp;
while((tmp=is.read())!=-1){
//操作
　　System.out.println((char)tmp);
}