如何在java中运行已安装的终端命令？

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class RunTerminalCommand {
    public static void main(String[] args) {
        try {
            // 创建进程构建器
            ProcessBuilder processBuilder = new ProcessBuilder();

            // 设置命令和参数
            processBuilder.command("command", "arg1", "arg2");

            // 设置工作目录（可选）
            processBuilder.directory(new File("path/to/directory"));

            // 启动进程
            Process process = processBuilder.start();

            // 获取命令输出
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }

            // 等待命令执行完成
            int exitCode = process.waitFor();
            System.out.println("命令执行完成，退出码：" + exitCode);
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}