Tag Archives: java-hashset

Java HashSet class is used to create collection to be used by the collection that uses a hash table for storage purposes that uses the… Read More
In java.util.Collections class, synchronizedSet() method is used to return a synchronized (thread-safe) set backed by the specified set. This method takes the HashSet as a… Read More
When elements get from the HashSet due to hashing the order they inserted is not maintained while retrieval. HashSet stores the elements by using a… Read More
Unlike List classes, the HashSet class does not provide any methods using which we can get the elements using their index. It makes it difficult… Read More
The List interface provides a way to store the ordered collection. It is an ordered collection of objects in which duplicate values can be stored.… Read More
HashSet is used to store distinct values in Java. The HashSet does not guarantee the constant order of elements over time, which means when we… Read More
The Single Data structure cannot be able to fulfill the requirements of the programmers that’s why there are a lot of inbuilt Data-Structures in Programming… Read More
Java HashSet class is used to create collection to be used by the collection that uses a hash table for storage purposes that uses the… Read More
ArrayList: In Java, ArrayList can have duplicates as well as maintains insertion order. HashSet: HashSet is the implementation class of Set. It does not allow… Read More
Given a Set of String, the task is to convert the Set to a comma-separated String in Java. Examples: Input: Set<String> = ["Geeks", "ForGeeks", "GeeksForGeeks"]… Read More
In HashSet, duplicates are not allowed. If we are trying to insert duplicates then we won’t get any compile-time or runtime error and the add()… Read More
HashSet is used to store distinct values in Java. HashSet stores the elements in random order, so there is no guarantee of the elements’ order.… Read More
The HashSet class implements the Set interface, backed by a hash table which is actually a HashMap instance. There is no guarantee made for the… Read More
ArrayList class is a resizable array, present in java.util package. The difference between an array and an ArrayList in Java, is that the size of… Read More
Given a string str, the task is to print all the permutations of str. A permutation is an arrangement of all or part of a… Read More