在BufferedReader中获取read（）返回的字符

Question

如何将read()in中返回的整数转换BufferedReader为实际字符值，然后将其附加到String？将read()返回一个代表字读整数。当我这样做时，它不会将实际字符附加到字符串中。而是将整数表示形式本身附加到String。

int c;
String result = "";

while ((c = bufferedReader.read()) != -1) {
    //Since c is an integer, how can I get the value read by incoming.read() from here?
    response += c;   //This appends the integer read from incoming.read() to the String. I wanted the character read, not the integer representation
}

我应该怎么做才能读取实际数据？

Answer 1

刚投到c一个char。

另外，不要使用过+=一个String在一个循环。它是O（n ^
2），而不是预期的O（n）。使用StringBuilder或StringBuffer代替。

int c;
StringBuilder response= new StringBuilder();

while ((c = bufferedReader.read()) != -1) {
    // Since c is an integer, cast it to a char.
    // If c isn't -1, it will be in the correct range of char.
    response.append( (char)c ) ;  
}
String result = response.toString();