Java ArrayList.add()

JavaBeginner

Append an element to a dynamic list.

When to use it

Use it for collections that grow dynamically.

Java · Editable example

import java.util.*;
class Main { public static void main(String[] args) { ArrayList<String> a = new ArrayList<>(); a.add("Hi"); System.out.println(a); } }

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Expected output

[Hi]

Common mistake and fix

Import java.util or ArrayList before use.

Related concepts: collections, generics

Explain this code

Append an element to a dynamic list.

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Java ArrayList.add()

When to use it

Expected output

Common mistake and fix

Explain this code

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