Launch a pdf file from java

I am trying to open a pdf file from the following code.

try {  
         String currentDir = System.getProperty("user.dir");   
         currentDir = currentDir+"/Report.pdf";  
         System.out.println("Current dir using System:" +currentDir);  
         if ((new File(currentDir)).exists()) 
             {  
         Process p = Runtime  
         .getRuntime()
     .exec("rundll32 url.dll,FileProtocolHandler " +currentDir);  
     p.waitFor();  
     }   
         else 
             {    
        System.out.println("File is not exists");   
     }  
    System.out.println("Done");   
}
    catch (Exception ex) 
        {      
    ex.printStackTrace();    
    }  

The print statement gives me the correct path of the file , i.e
Current dir using System:/Users/mshariff/NetBeansProjects/javaGUIbuilding/Report.pdf
but the program is giving the following error.

java.io.IOException: Cannot run program "rundll32": error=2, No such file or directory

I am using Mac OSX & Netbeans.

The solution you have at hand will only work an Windows (rundll32 is a Windows command)

Instead, you should take advantage of Desktop API

For example...

public static void main(String[] args) {
    try {
        Desktop desktop = Desktop.getDesktop();
        if (desktop.isSupported(Desktop.Action.OPEN)) {
            desktop.open(new File("Your.pdf"));
        } else {
            System.out.println("Open is not supported");
        }
    } catch (IOException exp) {
        exp.printStackTrace();
    }
}