java execute shell script [use ProcessBuilder]

java 另一個執行 shell script 的方法，使用 ProcessBuilder
import java.io.*; import java.net.*; import java.util.*; public class runshell { public static void main(String a[]) throws Exception { String cmd = "ls"; ProcessBuilder pb = new ProcessBuilder(cmd); Process pl = pb.start(); String line = ""; BufferedReader p_in = new BufferedReader(new InputStreamReader(pl.getInputStream())); while ((line = p_in.readLine()) != null) { System.out.println(line); } p_in.close(); } }