FileInputStream Demo

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilterInputStream;
import java.io.InputStream;

public class FileInputStreamTest {
	public static void main(String[] args) throws Exception {
		File f = new File("d:\\1.txt");
		InputStream fis = new FileInputStream(f);
		FilterInputStream filter = new BufferedInputStream(fis);// FilterInputStream是protected类型
		while (filter.available() > 0) {
			byte[] buf = new byte[1024];
			int len = filter.read(buf);
			String myStr = new String(buf, 0, len, "UTF-8");
			System.out.print(myStr);
		}
		fis.close();
	}
}