This program would find out the duplicate characters in a String and would display the count of them. import java.util.HashMap; import java.util.Map; import java.util.Set; public… [Read More]
Java Serialization
Here we are gonna discuss how to serialize and de-serialize an object and what is the use of it. What is Java Serialization? Serialization is… [Read More]
Check key & Value existence in Hashtable example – Java
Example In this example we are gonna see how to check Key and value existence in Hashtable. We will be using following two methods to… [Read More]
Get size of Hashtable example in Java
Example In this example we are gonna see how to get the size of Hashtable. We will be using size() method of Hashtable class to… [Read More]
Hashtable Iterator example – Java
In this example we will see how to iterate a Hashtable using Iterator. Using Iterator we can display Hashtable key and value separately for each… [Read More]
Hashtable in java with example
This class implements a hash table, which maps keys to values. Any non-null object can be used as a key or as a value. Hashtable… [Read More]
Remove all mappings from Hashtable example – Java
In the last tutorial we have seen how to remove a mapping from Hashtable based on key. In this tutorial we will learn how to… [Read More]
Remove mapping from Hashtable example – Java
In this tutorial we are gonna see how to remove a key-value mapping from Hashtable. We will be using remove(Object key) method of Hashtable class…. [Read More]
Java – Check if a particular key exists in HashMap example
In the last tutorial we learnt how to check whether a particular value exists in HashMap. In this example we are gonna see how to… [Read More]
Java – Check if a particular value exists in HashMap example
In this example we are checking whether a particular value exists in HashMap or not. We will be using containsValue() method of HashMap class to… [Read More]
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