Java读取txt

FileReader fr=new FileReader("D:\\workspace\\MyLearn\\count.txt");        //可以换成工程目录下的其他文本文件        BufferedReader br=new BufferedReader(fr);        while(br.readLine()!=null){            String s=br.readLine();            System.out.println(s);        }

用readLine后

s最后会变空

public static void main(String[] args) throws Exception    {        File file = new File("d:\\a.txt");        FileReader reader = new FileReader(file);        int fileLen = (int)file.length();        char[] chars = new char[fileLen];        reader.read(chars);        String txt = String.valueOf(chars);        System.out.println(txt);    }

txt不会