"hashset in java" Code Answer's
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how to define an arraylist in java
ArrayList<Integer> integerArray = new ArrayList<Integer>();
ArrayList<String> integerArray = new ArrayList<String>();
ArrayList<Double> integerArray = new ArrayList<Double>();
//... keep replacing what is inside the <> with the appropriate
//data type
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);
}
}
}
Source: www.flowerbrackets.com
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);
}
}
Source: www.flowerbrackets.com
hashset in java
// 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);
}
}
Source: www.flowerbrackets.com
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);
}
}
Source: www.flowerbrackets.com
hashset in java
- HashSet can have null, order is not guaranteed
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