How to dynamically add elements to String array

Question

I want to add dynamic number of elements to a string array from inside a for loop   How to create an string array of an undefined length

User · Answer

You cant add add items in string array more than its size  i ll suggest you to use ArrayList you can add  items dynamically at run time in arrayList if you feel any problem you can freely ask

User · Answer

when using String array  you have to give size of array while initializing  eg  String   str   new String 10     you can use index 0-9 to store values  str 0     value1  str 1     value2  str 2     value3  str 3     value4  str 4     value5  str 5     value6  str 6     value7  str 7     value8  str 8     value9  str 9     value10    if you are using ArrayList instread of string array  you can use it without initializing size of array    ArrayList str   new ArrayList     you can add value by using add method of Arraylist  str add  Value1      get retrieve a value from arraylist  you can use get method  String s   str get 0     find total number of items by size method  int nCount   str size      read more from here

User · Answer

Arrays in Java have a defined size  you cannot change it later by adding or removing elements  you can read some basics here      Instead  use a List   ArrayList lt String gt  mylist   new ArrayList lt String gt     mylist add mystring     this adds an element to the list    Of course  if you know beforehand how many strings you are going to put in your array  you can create an array of that size and set the elements by using the correct position   String   myarray   new String numberofstrings   myarray 23    string24    this sets the 24 th  first index is 0  element to string24

[java] How to dynamically add elements to String array?

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