java缓冲读取器无法读取我的双精度

Question

ServerSocket serverSocket;
PrintStream streamToClient;
BufferedReader streamFromClient;
Socket fromClient;
static int count = 0;
Thread thread;

InputStreamReader((fromClient.getInputStream())));
streamToClient = new PrintStream(fromClient.getOutputStream());

double strx = streamFromClient.readDouble();
System.out.println("Radius " + strx);

double area = strx * strx;
streamToClient.println("Luas " + area);

我的代码有错误

double strx = streamFromClient.readDouble();

有人能帮我读一下缓冲读取器中的“Double”吗

Answer 1

double strx = streamFromClient.readDouble();

无效BufferedReader没有readDouble方法

这就是你想要的：

String line = streamFromClient.readLine();
double strx = Double.parseDouble(line);

当心NumberFormatException可能被Double.parseDouble抛出的NumberFormatException，如果您需要处理，这取决于您