How to access an object from another method in Java

1. Answering based on the example question mentioned in the above StackOverflow link. 
2.  
3. private static NumberList numberlist; 
4. private static void create() { 
5. Scanner input = new Scanner(System.in); 
6.  
7. int length,offset; 
8.  
9. System.out.print("Input the size of the numbers : "); 
10. length = input.nextInt(); 
11.  
12. System.out.print("Input the Offset : "); 
13. offset = input.nextInt(); 
14.  
15. numberlist = new NumberList(length, offset); 
16. } 
17.  
18. private static void question(){ 
19. Scanner input = new Scanner(System.in); 
20.  
21. System.out.print("Please enter a command or type ?: "); 
22. String c = input.nextLine(); 
23.  
24. if (c.equals("a")){  
25. create();  
26. }else if(c.equals("b")){ 
27. numberlist.flip(); \\ error 
28. }else if(c.equals("c")){ 
29. numberlist.shuffle(); \\ error 
30. }else if(c.equals("d")){ 
31. numberlist.printInfo(); \\ error 
32. } 
33. } 
34.  
35. Making the NumberList instance a global variable may help you.