Java Program to print first n even and first n odd numbers

import java.io.*;
import java.util.*;
public class FirstEvenOdd{
    Scanner scan=new Scanner(System.in);
    int i, even=1, odd=1, limit;
    String choice;
    public void input(){
        try{
            System.out.println("\"Even\" for first n even numbers.\n\"Odd\" for first n odd numbers.\nEnter your choice: ");
            choice=scan.next();
            System.out.println("Enter the value of \"n\": ");
            limit=scan.nextInt();
        }
        catch(Exception e){
            System.out.println("Error Code: "+e);
            System.exit(0);
        }
    }

    public void compute(){
        if(choice.equalsIgnoreCase("Even"))
            evenNumber();
        else if(choice.equalsIgnoreCase("Odd"))
            oddNumber();
        else
            exit();
    }

    public void evenNumber(){
        System.out.println("\nFirst "+limit+" "+choice+" numbers are:- ");
        for(i=1; i<=(limit*2); i++){
            if(i%2<1){
                System.out.print(i+"\n");
                even++;
            }
            if(even-1==limit)
                break;
        }
    }

    public void oddNumber(){
        System.out.println("\nFirst "+limit+" "+choice+" numbers are:- ");
        for(i=1; i<=(limit*2); i++){
            if(i%2>0){
                System.out.print(i+"\n");
            }
            if(odd==limit)
                break;
        }
    }

    public void exit(){
        System.out.println("Wrong Choice Entered i.e. \""+choice+"\".");
    }

    public static void main(String[] args){
        FirstEvenOdd obj=new FirstEvenOdd();
        obj.input();
        obj.compute();
    }
}