Java - Runtime.exec() example (with consecutive commands)

import java.io.*;
import java.nio.charset.Charset;

public class RuntimeRunner {
    public static void main(String[] args) throws IOException {
        String conda = "D:\\Miniconda\\condabin\\conda.bat";
        String[] condaEnvs = {
            "PATH=" +
            "D:\\Miniconda\\envs\\py37;" +
            "D:\\Miniconda\\envs\\py37\\Library\\mingw-w64\\bin;" +
            "D:\\Miniconda\\envs\\py37\\Library\\usr\\bin;" +
            "D:\\Miniconda\\envs\\py37\\Library\\bin;" +
            "D:\\Miniconda\\envs\\py37\\Scripts;" +
            "D:\\Miniconda\\envs\\py37\\bin;" +
            "D:\\Miniconda\\condabin;" +
            System.getenv("PATH")
        };

        //Runtime.exec
        System.out.println("--- Runtime.exec()");
        System.out.println(">>>>>> single command:");

        runtimeTester(conda + " info --envs");
        System.out.print("packages count (base): ");
        runtimeTester(conda + " list | wc -l");

        System.out.println("\n>>>>>> consecutive command:");
        System.out.print("packages count (py37): ");
        runtimeTester(conda + " activate py37 && conda list | wc -l");

        // Runtime.exec with environment variables
        System.out.println("\n--- Runtime.exec() with environment variables");
        System.out.println(">>>>>> python");
        runtimeWithEnvsTester("cmd /c python -c \"import os;" +
                              "print('\\n'.join([path for path in os.environ['PATH'].split(';')" +
                              "if 'conda' in path]))\"", condaEnvs);
    }

    static void runtimeWithEnvsTester(String command, String[] envs) throws IOException {
        Process process = Runtime.getRuntime().exec(command, envs);
        BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream(), Charset.forName("UTF-8")));
        String line;

        while ((line = in.readLine()) != null) {
            System.out.println(line);
        }
    }

    static void runtimeTester(String command) throws IOException {
        runtimeWithEnvsTester(command, null);
    }
}