Properties isEmpty() method in Java with Examples

The isEmpty() method of Properties class is used to check if this Properties object is empty or not.

Syntax:

public boolean isEmpty()

Parameters: This method accepts no parameters

Returns: This method returns a boolean value stating if this Properties object is empty or not.

Below programs show the implementation of int isEmpty() method.

Program 1:

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// Java code to show the implementation of
// isEmpty 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("Properties: "
                           + properties.toString());
  
        // Checking if the Properties is empty
        System.out.println("Is Properties empty: "
                           + properties.isEmpty());
    }
}

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Output:

Properties: {Book=500, Mobile=5000, Pen=10, Clothes=400}
Is Properties empty: false

Program 2:

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// Java program to demonstrate
// isEmpty() 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();
  
        // Print Properties details
        System.out.println("Current Properties: "
                           + properties.toString());
  
        // Checking if the Properties is empty
        System.out.println("Is Properties empty: "
                           + properties.isEmpty());
    }
}

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Output:

Current Properties: {}
Is Properties empty: true

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



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