java - Can't add integer to an array without a 0 at first index -

java - Can't add integer to an array without a 0 at first index -

i used arraylist @ first. course of study teacher told me can't utilize arraylist in program. said can utilize arrays.

the problem when add together integer array, puts 0 on first index.

here code :

int[] handbag = new int[1]; boolean isit = true; { int[] newbag = new int[bag.length + 1]; string name = scanner.next(); if (name.equals("a")){ int number = scanner.nextint(); (int = 0; < bag.length; i++) { newbag[newbag.length - 1] = number; newbag[i] = bag[i]; } handbag = newbag; system.out.println(number + " added bag."); } } while (isit == true);

please help me guys. can't create minimum , size operations without right add together operation.

you start single-element array, , add together sec element it:

int[] newbag = new int[bag.length + 1];

thus time you've read 1 number array contains 2 elements (i.e. 1 element many).

to right this, need alter the

int[] handbag = new int[1];

to

int[] handbag = new int[0];

if looks odd, see why java allow arrays of size 0?

you'll need move

newbag[newbag.length - 1] = number;

out of loop.

java arrays add