Java ArrayList forEach()

Java ArrayList [Java ArrayList] Java ArrayList

forEach()

forEach() 

arraylist.forEach(Consumer<E> action)

arraylist ArrayList

  • action -

10

import java.util.ArrayList;

class Main {
    public static void main(String[] args) {
        //
        ArrayList<Integer> numbers = new ArrayList<>();

        //
        numbers.add(1);
        numbers.add(2);
        numbers.add(3);
        numbers.add(4);
        System.out.println("ArrayList: " + numbers);

        // 10
        System.out.print(" ArrayList: ");
       
        // lambda forEach
        numbers.forEach((e) -> {
            e = e * 10;
            System.out.print(e + " ");
        });
    }
}

ArrayList: [1, 2, 3, 4]
 ArrayList: 10 20 30 40

numbers 

numbers.forEach((e) -> {
    e = e * 10;
    System.out.print(e + " ");  
});

lambda forEach() lambda 10

lambda Java Lambda

forEach() for-each Java for-each

Java ArrayList [Java ArrayList] Java ArrayList