Use Lambda expression to iterate collection members
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There are many ways to iterate collection members,but lambda expression is more convienient (java 8 new features)now show it below:
import java.util.*;
public class IteratorTest {
public static void main(String[] args) {
Collection books = new HashSet();
books.add(“Crazy Java books.”);
books.add(“Java Programming and Applications”);
books.add(“Control Yourself”)
//use lambda expression
books.forEach(obj->System.out.println(“members are:”+obj);
//Create a iterator
Iterator iterator = books.iterator();
//use method in iterator to iterate members of collection.It’s complicated.
/*while (iterator.hasNext()) {
String book = (String) iterator.next();
System.out.println(book);
}*/
//use lambda
iterator.forEachRemaining(obj->System.out.println(“Member are below:”+obj));
System.out.println(books);
}
}
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