Simple Java LinkedHashSet example
- /*
- Simple Java LinkedHashSet example
- This simple Java Example shows how to use Java LinkedHashSet.
- It also describes how to add something to LinkedHashSet object
- using add method.
- */
- import java.util.LinkedHashSet;
- public class SimpleLinkedHashSetExample {
- public static void main(String[] args) {
- //create object of LinkedHashSet
- LinkedHashSet lhashSet = new LinkedHashSet();
- /*
- Add an Object to LinkedHashSet using
- boolean add(Object obj) method of Java LinkedHashSet class.
- This method adds an element to LinkedHashSet if it is not
- already present in LinkedHashSet.
- It returns true if the element was added to LinkedHashSet, false otherwise.
- */
- lhashSet.add(new Integer("1"));
- lhashSet.add(new Integer("2"));
- lhashSet.add(new Integer("3"));
- /*
- Please note that add method accepts Objects. Java Primitive values CAN NOT
- be added directly to LinkedHashSet. It must be converted to corrosponding
- wrapper class first.
- */
- System.out.println("LinkedHashSet contains.." + lhashSet);
- }
- }
- /*
- Output of the program would be
- LinkedHashSet contains..[1, 2, 3]
- */
