Error While Opening A PDF file

[Cluster Storm]

I am getting this error . . .

test.java:5: unreported exception java.io.IOException; must be caught or declared to be thrown
Runtime.getRuntime().exec( "rundll32 url.dll,FileProtocolHandler Tic Tac Toe itemStrategy.pdf");
^
1 error

java.lang.NoClassDefFoundError: test
Caused by: java.lang.ClassNotFoundException: test
at java.net.URLClassLoader$1.run(URLClassLoader.java: 202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 07)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 48)
Could not find the main class: test. Program will exit.
Exception in thread "main"

Code is

public class test 
{
	public static void main (String[] args) {
	
		Runtime.getRuntime().exec( "rundll32 url.dll,FileProtocolHandler " + "Guide.pdf");
	}
}

or Is there any alternative way to open a file from directory other than images etc ???

[Tolls]

It's not erroring trying to open the file, it's not even compiling.
This:
unreported exception java.io.IOException; must be caught or declared to be thrown
is a compilation error.
You need to either catch or throw the exception.

[Cluster Storm]

As you said you need to either catch or throw the exception . .
I use try and catch block . . .
Now i am getting this compile time error . . .

test.java:14: reached end of file while parsing
}


Modified code is :

public class test 
{
	public static void main ( String[] args ) {
			
	try
	{
  		Runtime.getRuntime().exec( "rundll32 url.dll,FileProtocolHandler " + "Tic Tac Toe itemStrategy.pdf" );
	}
	catch ( Exception  e )
	{
  		System.err.print( e.getMessage() );
	}

}

This problem is appearing now, before that when i run first time it work properly . . . but now it is giving me an error . . .

Is there any alternative way to do such type of task ???

[Tolls]

Again...compilation error.
Count your brackets.

[Cluster Storm]

Ok i recover this error . . . but the file is not opening ??? What i do ?? You don't have any alternate way to open a file ??

Please

[Tolls]

No idea what it is you're trying to do, frankly, but that exec looks flaky.

You could have a look at the runtime traps article.

It's generally best to split an exec call up into a String[], so (from the article):

String[] cmd = new String[3];
cmd[0] = "cmd.exe" ;
cmd[1] = "/C" ;
cmd[2] = "some command";

[Cluster Storm]

Thanks . . .