Simple Java utility class to download and run BuildTools

BuildToolsRunner.java

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.nio.file.Files;

public class BuildToolsExecutor {

    //java -Dversion=1.19.2 BuildToolsExecutor.java
    //java -Djava=custom_path -Dversion=1.19.2 BuildToolsExecutor.java
    public static void main(String[] args) {
	String java = System.getProperties().getProperty("java", "java");
        File folder = new File(System.getProperty("user.dir"));

        String version = System.getProperty("version");
        boolean remapped = System.getProperties().containsKey("remapped");

        File targetFolder = new File(folder, remapped ? version + "-remapped" : version);
        File buildToolsFile = new File(targetFolder, "BuildTools.jar");

        checkBuildTools(buildToolsFile);

        try {
            ProcessBuilder builder = new ProcessBuilder(java, "-jar", buildToolsFile.getName(), "--rev", version);
            if (remapped)
                builder.command().add("--remapped");
            builder.directory(targetFolder);
            builder.inheritIO();
            Process process = builder.start();
            process.waitFor();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static void checkBuildTools(File file) {
        if (!file.exists()) {
            System.out.println("BuildTools.jar not found, downloading...");
            downloadBuildTools(file);
        }
    }

    private static void downloadBuildTools(File targetFile) {
        try {
            if (!targetFile.getParentFile().exists())
                targetFile.getParentFile().mkdirs();

            InputStream stream = new URL("https://hub.spigotmc.org/jenkins/job/BuildTools/lastSuccessfulBuild/artifact/target/BuildTools.jar").openStream();
            Files.copy(stream, targetFile.toPath());
        } catch (IOException e) {
            e.printStackTrace();
            System.exit(1);
        }
    }
}