A have a float and i would like to be an int because of one method

Question

let be more detailed...
i would like to do this : int i= (int) k ,k= float
How can i do this without using convertion? there is method of that?
Another problem that i have is that my program takes an argument from the command line. i take this argument into the constructor and then i am using in all my methods this line of command:
float k= Float.valueOf(arg).floatValue();//i want float because of the problem.
is it right that?can i do something else? there is a method for this,too?
thanks

Answer 1

i am sorry for my formatting.
i mean that it can catch the error .I have a print command but it is not appear.But the previous print command has an output.is that ok?
try
float arg = Float.parseFloat( args );
if( args.length==0)
System.out.println("Close Window");//has an output
catch(ArrayIndexOutOfBoundsException e)
System.out.println("Caught ArrayIndexOutOfBounds Exception" + e);
//it is not appear,so it did not catch it the error
}