Java Program to Iterate over ArrayList using Lambda Expression

Example: Pass ArrayList as Function Parameter

 import java.util.ArrayList; class Main { public static void main(String[] args) { // create an ArrayList ArrayList<String> languages = new ArrayList<>(); // add elements to the ArrayList languages.add("Java"); languages.add("Python"); languages.add("JavaScript"); // print arraylist System.out.print("ArrayList: "); // iterate over each element of arraylist // using forEach() method languages.forEach((e) -> { System.out.print(e + ", "); }); } }

Output

 ArrayList: Java, Python, JavaScript,

In the above example, we have created an arraylist named languages. Notice the code,

 languages.forEach((e) -> { System.out.print(e + ", "); });

Here, we are passing the lambda expression as an argument to ArrayList forEach().