Java IO之一读取文件

package com.lf.iopreoject;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;

public class TestCode {
    public static void main(String[] args) {
        TestCode.testFileInputStream();

    }

    public static void testFileInputStream() {
        //读取一个文件
        File file = new File("song.txt");
        BufferedReader br = null;
        try {
            String str;
            FileReader fr = new FileReader(file);
            br = new BufferedReader(fr);
            // 读取的结果不为空就在控制台打印
            while ((str = br.readLine()) !=null) {
                System.out.println(str);
            }
        } catch (Exception e) {
            // TODO: handle exception
        }finally{
            if (br!=null) {
                try {
                    br.close();
                } catch (Exception e) {
                    // TODO: handle exception
                }

            }
        }
    }

}