java 执行包含通配符linux命令

package test.runtime;

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

public class RuntimeTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			String[] cmd = {"sh","-c", "du -h /opt/apache*"};
			Process chmodProcess  =  Runtime.getRuntime().exec(cmd);
			BufferedReader br = new BufferedReader(new InputStreamReader(chmodProcess.getInputStream()));
			String line =null;
			while((line = br.readLine() )!= null) {
				System.out.println(line);
			}
			System.out.println("end");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}