Properties entrySet() method in Java with Examples

The entrySet() method of Properties class is used to get the Set view of this Properties mappings.

Syntax:

public Set<Map.Entry> entrySet()

Parameters: This method do not accepts any parameters.

Returns: This method returns a Set view of the mappings of this Properties object.

Below programs illustrate the entrySet() method:

Program 1:

// Java program to demonstrate
// entrySet() method.

import java.util.*;

public class GFG {

    // Main method
    public static void main(String[] args)
    {

        // Create a properties and add some values
        Properties properties = new Properties();
        properties.put("Pen", 10);
        properties.put("Book", 500);
        properties.put("Clothes", 400);
        properties.put("Mobile", 5000);

        // Print Properties details
        System.out.println("Current Properties: "
                           + properties.toString());

        // Using entrySet() to get the set view
        System.out.println("The set is: "
                           + properties.entrySet());
    }
}

Output:

Current Properties: {Book=500, Mobile=5000, Pen=10, Clothes=400}
The set is: [Book=500, Mobile=5000, Pen=10, Clothes=400]

Program 2:

// Java program to demonstrate
// entrySet() method.

import java.util.*;

public class GFG {

    // Main method
    public static void main(String[] args)
    {

        // Create a properties and add some values
        Properties properties = new Properties();

        properties.put(1, "100RS");
        properties.put(2, "500RS");
        properties.put(3, "1000RS");

        // print Properties details
        System.out.println("Current Properties: "
                           + properties.toString());

        // Using entrySet() to get the set view
        System.out.println("The set is: "
                           + properties.entrySet());
    }
}

Output:

Current Properties: {3=1000RS, 2=500RS, 1=100RS}
The set is: [3=1000RS, 2=500RS, 1=100RS]

References: https://docs.oracle.com/javase/9/docs/api/java/util/Properties.html#entrySet–