java运行ubuntu clear命令

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

public class ClearScreen {

    public static void main(String[] args) {
        try {
            // 执行clear命令
            Process process = Runtime.getRuntime().exec("clear");

            // 读取命令输出
            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
            process.waitFor();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}