Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind Java ArrayList forEach() Method?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Order
Put the learning moves in the order that makes the concept easiest to apply.
The forEach() method performs an action on every item in a list.
Definition and Usage
Java ArrayList forEach() Method
❮ ArrayList Methods
ArrayListDefinition and Usage
The forEach() method performs an action on every item in a list. The action can be defined by a lambda expression that is compatible with the accept() method of Java's Consumer interface.
To learn about lambda expressions, see our Java Lambda Expression tutorial .
Syntax
public void forEach(Consumer
action )Parameter Values
| Parameter | Description |
|---|---|
| action | Required. A Consumer object or lambda expression which performs an action on an item. |