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Dans cet exemple, nous allons apprendre à parcourir chaque élément de la liste ArrayList en utilisant les expressions lambda en Java.
Pour comprendre cet exemple, vous devriez comprendre ce qui suitProgrammation JavaThème :
import java.util.ArrayList; class Main { public static void main(String[] args) { //Création de ArrayList ArrayList<String> languages = new ArrayList<>(); //Add elements to the ArrayList languages.add("Java"); languages.add("Python"); languages.add("JavaScript"); //Print the array list System.out.print("ArrayList: "); //to traverse each element of the array list //Using the forEach() method languages.forEach((e -> { System.out.print(e + " , "); }); } }
Output result
ArrayList: Java, Python, JavaScript,
In the above example, we created an array list named languages. Note the code,
languages.forEach((e -> { System.out.print(e + " , "); });
In this article, we pass lambda expressions as parameters toArrayList forEach()。