java输出一个18B20温度传感器代码

好的，以下是一个简单的Java代码，用于读取18B20温度传感器的温度值：

import java.util.Scanner;
import java.io.*;

public class TemperatureSensor {

    public static void main(String[] args) throws Exception {

        // Open the file that contains the temperature sensor data
        FileInputStream fstream = new FileInputStream("/sys/bus/w1/devices/28-00000XXXXXXX/w1_slave");
        BufferedReader br = new BufferedReader(new InputStreamReader(fstream));

        String strLine;

        // Read the temperature data from the file
        while ((strLine = br.readLine()) != null) {

            // Check if the data contains "t=" which indicates the temperature data
            if (strLine.contains("t=")) {

                // Extract the temperature value from the data
                int index = strLine.indexOf("t=") + 2;
                String temp = strLine.substring(index);

                // Convert the temperature value from string to double
                double temperature = Double.parseDouble(temp) / 1000;

                // Print the temperature value
                System.out.println("Temperature: " + temperature + " C");
            }

        }

        // Close the input stream
        br.close();
    }

}

请注意，此代码假设您已经将18B20传感器连接到树莓派或其他微型计算机，并带有正确的电缆和电阻。如果您需要更多关于18B20传感器的信息，请参阅其数据手册。