java IO存在问题

//java读取文件
/*String path = "D:/project/training/src/com/test1/test.txt";
File file = new File(path);
if(!file.exists() || file.isDirectory()) {
    System.out.println("error");
}
try {
    BufferedReader br = new BufferedReader(new FileReader(file));
    String temp = null;
    StringBuffer sb = new StringBuffer();
    temp = br.readLine();
    while(temp != null) {
        System.out.println(temp);
        temp = br.readLine();
    }
} catch(IOException e) {
    System.out.println("error");
}*/
///??这样子都文件，如果文件是空白的，为什么还会读一个中文
String filePathAndName = "D:/project/training/src/com/test1/test2.txt";
String fileContent = "";
try {

    File f = new File(filePathAndName);
    if(f.isFile()&&f.exists()){
        InputStreamReader read = new InputStreamReader(new FileInputStream(f),"UTF-8");
        BufferedReader reader=new BufferedReader(read);
        String line;
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
        read.close();
    }
} catch (Exception e) {
    System.out.println("读取文件内容操作出错");
    e.printStackTrace();
}