hashset functions in java code example
Example 1: hashset in java
Let’s see java hashset example.
import java.util.HashSet;
public class HashSetExample
{
public static void main(String[] args)
{
HashSet<String> hs = new HashSet<>();
hs.add("Banana");
hs.add("Orange");
hs.add("Apple");
hs.add("Pineapple");
hs.add("Mango");
System.out.println(hs);
}
}
Example 2: hashset in java
// iterate hashset in java
import java.util.HashSet;
public class HashSetForEach
{
public static void main(String[] args)
{
HashSet<String> hs = new HashSet<String>();
hs.add("Hello");
hs.add("world");
hs.add("Java");
for(String str : hs)
{
System.out.println(str);
}
}
}
Example 3: java hashset
HashSet<String> hset = new HashSet<String>();
// Adding elements to the HashSet
hset.add("Apple");
hset.add("Mango");
Example 4: HashSet h = new HashSet();
HashSet<String> h = new HashSet<String>();
Example 5: hashset in java
// java hashmap example
import java.util.HashMap;
public class HashMapExample
{
public static void main(String[] args)
{
HashMap<Integer, String> hm = new HashMap<Integer, String>();
// add elements
hm.put(10,"Apple");
hm.put(20,"Banana");
hm.put(30,"Cherry");
hm.put(40,"Dragonfruit");
// print HashMap elements
System.out.println("HashMap elements: " + hm);
}
}