What is the HashTable.equals() method in Java?
The equals() method of HashTable is used to check the equality between two HashTable objects. It is available under the java.util package.
Syntax
HashTable.equals(parameter);
Parameter
This method takes a single object to compare with any HashTable.
Return value
The method returns true if the HashTable is the same as the given object. Otherwise, it returns false.
Code
Let’s have a look at the code.
import java.util.*;class Solution1 {public static void main(String args[]) {// create two hash tablesHashtable<Integer,String> table1 = new Hashtable<Integer,String>();Hashtable<Integer,String> table2 = new Hashtable<Integer,String>();// put values in two tablestable1.put(1, "A");table1.put(2, "B");table1.put(3, "C");table1.put(4, "D");table2.put(1, "A");table2.put(2, "B");table2.put(3, "C");table2.put(4, "D");// display resultSystem.out.println("Are two tables equal:"+table1.equals(table2));}}
Explanation
- In line 1, we import the
java.util.*classes to include theHashSetdata structure. - In lines 7 and 8, we initiate the objects
table1andtable2 - In lines 11 to 14, we insert some key-value pairs in
table1. - In lines 16 to 19, we insert some key-value pairs in
table2. - In line 22, we check if
table2is equal totable1or not, and print the result.
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