How can we open and enter a software installed on my desktop through java -

i have application installed on desktop.on clicking asks username ,password , rsa token(which randomly generated number). how can open application through java . ....need on

i have tried robot class did not succeed.need

perhaps i'm mising something.. question is

how can open application through java

you can execute command java in terminal window:

runtime rt = runtime.getruntime(); process pr = rt.exec("c:\\app.exe");