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What is the SortedMap.entrySet() method in Java?

Sumit Sharma

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

In this shot, we will discuss how to use the SortedMap.entrySet() method in Java.

The SortedMap.entrySet() method is present in the SortedMap interface inside the java.util package. The SortedMap.entrySet() method is used to create a new set and store the elements of the SortedMap.

Parameters

The SortedMap.entrySet() method doesn’t take any parameters.

Return value

The SortedMap.entrySet() method returns a set with the same elements as the map.

Code

Let’s look at the code snippet below.

import java.util.*;
class Main
{
public static void main(String[] args)
{
SortedMap<Integer, String> s = new TreeMap<Integer,String>();
s.put(2,"Welcome");
s.put(12,"to");
s.put(31,"the");
s.put(18,"world");
s.put(25,"of");
s.put(36,"java");
System.out.println("SortedMap mappings are: "+ s);
System.out.println("The set after using entrySet() method is:" + s.entrySet());
}
}
Using the SortedMap.entrySet() method in Java

Explanation

  • In line 1, we import the required package.
  • In line 2, we make a Main class.
  • In line 4, we make a main function.
  • In line 6, we declare a SortedMap that consists of integer type keys and string type values.
  • From lines 8 to 13, we use the TreeMap.put() method to insert values in the Hashtable.
  • In line 15, we display the mappings present in the SortedMap.
  • In line 17, we use the SortedMap.entrySet() method to obtain the set with the same key-value pairs as the SortedMap and display it.

In this way, we can use the SortedMap.entrySet() method in Java.

RELATED TAGS

communitycreator
java

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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