Let's learn about collection and How to print Objects

Arrays My first question is can we add, remove value in array ? NO, we can add or remove a value from a array, we cannot manipulate because array is fixed size so we need to create another array to add or remove a value void pushValueArray(){ int [] arr = {1,2,3,4}; int [] arrCopy = new int[5]; int i = 0 ; while(iarr.length){ arrCopy[i]=arr[i]; i++; } arrCopy[arr.length]=5; System.out.println(Ar