Dynamic array in java

When we enter element in array but array is full then create a function, this function create a new array double size and copy element from previous array to new array  and return this new array 

public class DynamicArray {

 static   int []increaseSizeOfArray(int []arr){

          int []brr=new int[(arr.length*2)];

          for (int i = 0; i < arr.length; i++) {

         brr[i]=arr[i];     

          }

          return brr;

     }

public static void main(String[] args) {

     int []arr=new int[5];

      for (int i = 0; i < 11; i++) {

          if (i<arr.length) {

              arr[i]=i+100;

          }

          else {

              arr=increaseSizeOfArray(arr);

              arr[i]=i+100;

          }        

     }

      

for (int i = 0; i < arr.length; i++) {

     System.out.println("arr="+arr[i]);

}   

}

}