Changing size of java array

[Angela lewis]

I have an array of Strings . Can i change its size at run time.
Is there a method for this?

[john smith]

No. Array size is fixed at the point of creation. Should you need a list-type collection which can grow, use ArrayList instead.

[Ernest Friedman-Hill]

While John's answer is technically correct, you can of course allocate a new array and copy the old one over:

  String[] smallArray = new String[5];
  // decide you need 6 elements, not 5
  String[] temp = new String[6];
  System.arraycopy(smallArray, 0, temp, 0, smallArray.length);
  smallArray = temp;

This is often all you really need, and it's actually how ArrayList works internally.

[Angela lewis]

thank you so much.
that was great help