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–

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