Java error “Value of local variable is not used”

Question

I am really new to java (started learning 2 days ago). Sorry if this is a stupid question. I am trying to learn how to use rt.exec & similar methods so I tried to make a

Answer 1

The use of the variable is not in issue here. That error appears because JVM needs a method with the signature to know where to start execution.

public static void main( String args[] ){ //TODO: Stuff here } 

Introduce a method with this signature in your class, and it shall clear that error. Alternatively, you may embed your code in a static block as below - but this method is not to be recommended.

static {
    // TODO: Your code here
}