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Program to iterate over a List using Java 8 Lambda
Let us first create a List and add elements −
ArrayList<String>arrayList = new ArrayList<String>();
arrayList.add("100");
arrayList.add("200");
arrayList.add("300");
arrayList.add("400");
arrayList.add("500");Now, iterate over it with Lambda Expressions −
ArrayList<String>list = arrayList;
System.out.println("Iterating...");
list.stream().forEach(elem -> System.out.println(elem));Example
import java.util.ArrayList;
import java.util.List;
public class Demo {
public static void main(String[] args) {
ArrayList<String>arrayList = new ArrayList<String>();
arrayList.add("100");
arrayList.add("200");
arrayList.add("300");
arrayList.add("400");
arrayList.add("500");
arrayList.add("600");
arrayList.add("700");
arrayList.add("800");
arrayList.add("900");
arrayList.add("1000");
System.out.println("ArrayList...");
for (String s: arrayList)
System.out.println(s);
ArrayList<String>list = arrayList;
System.out.println("Iterating...");
list.stream().forEach(elem -> System.out.println(elem));
}
}Output
ArrayList... 100 200 300 400 500 600 700 800 900 1000 Iterating... 100 200 300 400 500 600 700 800 900 1000
Updated on: 30-Jul-2019
2K+ Views
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