使用Java 8 Lambda遍历列表的程序
让我们首先创建一个List并添加元素-
ArrayList<String>arrayList = new ArrayList<String>();
arrayList.add("100");
arrayList.add("200");
arrayList.add("300");
arrayList.add("400");
arrayList.add("500");现在，使用Lambda表达式对其进行迭代-
ArrayList<String>list = arrayList;
System.out.println("Iterating...");
list.stream().forEach(elem -> System.out.println(elem));示例
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));
}
}输出结果
ArrayList... 100 200 300 400 500 600 700 800 900 1000 Iterating... 100 200 300 400 500 600 700 800 900 1000