Java execute shell script

ProcessUtil

package com.ericsson.iptv.testcase;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

public class ProcessUtil {
	/**
	 * 
	 * @param map
	 *            store env variable<K,V>
	 * @param script
	 *            arbitrary arguments, the first is script, the next is
	 *            arguments
	 * @return 0 represent normal
	 */
	public static int execute(Map<String, String> map, String... arguments) {
		ProcessBuilder pb = new ProcessBuilder(arguments);
		Map<String, String> env = pb.environment();
		for (Map.Entry<String, String> entry : map.entrySet()) {
			env.put(entry.getKey(), entry.getValue());
		}
		Process p = null;
		try {
			p = pb.start();
			if (p != null) {
				p.waitFor();
			}
			BufferedReader br = new BufferedReader(new InputStreamReader(
					p.getInputStream()));
			String line = null;
			while ((line = br.readLine()) != null) {
				System.out.println(line);
			}

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InterruptedException e) {
			e.printStackTrace();
		} finally {
			p.destroy();
		}
		System.out.println(p.exitValue());
		return p.exitValue();
	}

	public static void main(String[] args) {
		Map map = new HashMap();
		map.put("JAVA_HOME",
				"/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home");
		map.put("NODE_PATH", "/usr/local/lib/node_modules/");
		String script = "/Users/david/Documents/workspace/Cable/src/main/java/com/ericsson/iptv/testcase/test.sh";
		execute(map, script);

	}
}