开机启动快捷方式所在目录

想通过java查找开机启动快捷方式所在目录，这个目录在注册表有配置

所以通过查找注册表可以得到这个目录

具体代码如下：

import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;



public class GetRegistryTest {
	private static final String REGQUERY_UTIL = "reg query ";
	
	private static final String REGSTR_TOKEN = "REG_SZ";
	//Common Startup为注册表项的名称
	private static final String STRART_UP = REGQUERY_UTIL +
			    "\"HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\"" 
			     + " /v \"Common Startup\"";
	
	public static String getFolderPath() {
	    try {
	      Process process = Runtime.getRuntime().exec(STRART_UP);
	      StreamReader reader = new StreamReader(process.getInputStream());

	      reader.start();
	      process.waitFor();
	      reader.join();

	      String result = reader.getResult();
	      int p = result.indexOf(REGSTR_TOKEN);

	      if (p == -1)
	         return null;

	      return result.substring(p + REGSTR_TOKEN.length()).trim();
	    }
	    catch (Exception e) {
	      return null;
	    }
	  }
	
	  static class StreamReader extends Thread {
		    private InputStream is;
		    private StringWriter sw;

		    StreamReader(InputStream is) {
		      this.is = is;
		      sw = new StringWriter();
		    }

		    public void run() {
		      try {
		        int c;
		        while ((c = is.read()) != -1)
		          sw.write(c);
		        }
		        catch (IOException e) { ; }
		      }

		    String getResult() {
		      return sw.toString();
		    }
		  }
	  public static void main(String s[]) {
		    System.out.println("开机启动快捷方式所在目录  : " 
		       + getFolderPath());
		  }
}