Why am i not able to run this program ??

When i exec a single process it works fine but when i try to execute array of commands i couldn't it complies but doesn't execute any 1 of the commands.
Please let me know
import java.io.IOException;
class RunTime
public static void main(String raja[])
Runtime r = Runtime.getRuntime();
Process p;
String[] commands = { "notepad","calcic","mspaint"};
System.out.println("Executing processes please wait........");
try
int commandslength = commands.length;
for(int i = 0 ; i < commandslength ; i++)
p = r.exec("commands");
catch(Exception e)     
System.out.println("Cant proceed furthur ..");

Instead ofp = r.exec("commands");dop = r.exec(commands);Next time please paste your code between &#91;code&#93; tags with the help of the code button just above the edit message area.
It makes the code MUCH more readable.
Regards

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