如何输入从java代码运行的终端命令

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

public class CommandRunner {
    public static void main(String[] args) {
        try {
            // 创建ProcessBuilder对象，并设置要执行的命令
            ProcessBuilder processBuilder = new ProcessBuilder("ls", "-l");

            // 设置工作目录（可选）
            processBuilder.directory("/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();
        }
    }
}