[Java知识库]JAVA学习day80--从文件中读取数据

package day08;

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

/**
 * java.io.FileInputStream
 * 文件输入流
 * 用于从文件中读取数据
 * @author soft01
 *
 */
public class FISDemo {

	public static void main(String[] args) throws IOException {
		FileInputStream fis = new FileInputStream("fos.txt");
		
		byte [] data = new byte[100];
		int len = fis.read(data);
		
		String str = new String(data,0,len,"UTF-8");
		System.out.println(str);
		
		fis.close();

	}

}