package cn.hcd.io;

import java.io.File;
import java.io.FileInputStream; 
import java.io.FileNotFoundException;
import java.io.IOException;

/**
 * FileInput常用方法
 *
 */
public class FileInputStreamDemo {
	public static void main(String[] args) {
		File file = new File("E:/kgc/Hello.txt");
		FileInputStream fis =
 
 null;
		try {
			fis = new FileInputStream(file);
//			檢視流讀取的位元組數
			System.out.println(fis.available());
//			用read()方法讀取內容
			byte[] b = new byte [1024]; 
			int count;
			while((count = fis.read()) != -1){
				System.out.print((char)count);
			}
//			用read(byte [] b)方法讀取內容
			while((count = fis.read(b)
 
) != -1){
				for(int i=0;i<count;i++){
					System.out.print((char)b[i]);
				}
			}
//			用int read(byte [] b, int off ,int len)方法讀取內容
			while((count = fis.read(b, 0, 10)) != -1){
				System.out.println("*******"+count+"******");
				for(int i=0;i<count;i++){
					System.out.print((char)b[i]);
				}
 

			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			try {
				//關閉流
				fis.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}