FileReader读取文件乱码问题

//FileReader reader = new FileReader(file);
//注意乱码问题
InputStreamReader isr = null;
try {
isr = new InputStreamReader(new FileInputStream(file), "GBK");
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
BufferedReader bufferedReader = new BufferedReader(isr);
try {
while(true){
info = bufferedReader.readLine();
if(info == null){
break;
}
System.out.println(info);
}
} catch (IOException e) {
e.printStackTrace();
}