ArrayList and Vector both implements List interface and maintains insertion order. But there are many differences between ArrayList and Vector classes that are given below….

The properties object contains key and value pair both as a string. It is the subclass of Hashtable. It can be used to get property…

Comparable and Comparator both are interfaces and can be used to sort collection elements. But there are many differences between Comparable and Comparator interfaces that…

Comparator interface is used to order the objects of user-defined class. This interface is found in java.util package and contains 2 methods compare(Object obj1,Object obj2)…

Comparable interface is used to order the objects of user-defined class.This interface is found in java.lang package and contains only one method named compareTo(Object).It provide…

We can sort the elements of: String objects Wrapper class objects User-defined class objects Collections class provides static methods for sorting the elements of collection.If…

HashMap and Hashtable both are used to store data in key and value form. Both are using hashing technique to store unique keys. But there…

A Hashtable is an array of list.Each list is known as a bucket.The position of bucket is identified by calling the hashcode() method.A Hashtable contains…

A TreeMap contains values based on the key. It implements the NavigableMap interface and extends AbstractMap class. It contains only unique elements. It cannot have…

A LinkedHashMap contains values based on the key. It implements the Map interface and extends HashMap class. It contains only unique elements. It may have…