insert element into arraylist java
ArrayList<String> arrayList = new ArrayList<>();
// Adds element at the back of the list
arrayList.add("foo");
arrayList.add("bar");
// Result = ["foo", "bar"]
// Adds element at the specified index
arrayList.add(1, "baz");
// Result = ["foo", "baz", "bar"]ArrayList<Integer> str=new ArrayList<Integer>();
str.add(0);
str.add(1);
// Result = [0, 1]
str.add(1, 11);
// Result = [0, 11, 1]
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