代码如下：

package com.java.app01;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

public class IsDevicesConnect {
    public static void main(String[] args) throws Exception {
        boolean bool = isDevicesConnect();
        System.out.println(bool);

    }

    public static Boolean isDevicesConnect() {
        Process process;
        Runtime runtime = Runtime.getRuntime();
        String driverName = "";
        try {
            process = runtime.exec("adb devices");
            InputStream inputStream = process.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "GBK");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            String line;
            StringBuilder stringBuilder = new StringBuilder();
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line);
            }
            driverName = stringBuilder.toString();
            driverName = driverName.replaceAll("List of devices attached", "");
            driverName = driverName.replaceAll("\n", "");
            driverName = driverName.replaceAll("device", "");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (driverName != null && driverName.length() != 0) {
                System.out.println("获取到的设备名是：" + driverName);
                return true;
            }
            return false;
        }
    }
}