HashMap vs Hashtable: Unlocking the Best Choice for Efficient Data Management
HashMap vs Hashtable: Unlocking the Best Choice for Efficient Data Management
HashMap is Not synchronized (not thread-safe)
HashMap is
Not synchronized (not thread-safe)
HashMap Allows one null key and multiple null values
HashMap
Allows one null key and multiple null values
Hashtable is Synchronized (thread-safe)
Hashtable is Synchronized (thread-safe)
Hashtable Does not allow null keys or values. Throws NullPointerException if null is used
Hashtable
Does not allow null keys or values. Throws NullPointerException if null is used
Hashtable Slower than HashMap because of synchronization overhead
Hashtable
Slower than HashMap because of synchronization overhead
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Click here for more details about HashMap vs Hashtable