Properties clone() method in Java with Examples

The Java.util.Properties.clone() method is used to create a shallow copy of this instance with all the elements from this Properties instance.

Syntax:

public Object clone()

Parameters: The method does not take any parameter

Return Value: The function returns the cloned Object which is the shallow copy of this Properties instance.

Below programs illustrate the Java.util.Properties.clone() method.

Example 1:

// Java code illustrating clone() method

import java.util.*;

class PropertiesDemo {
    public static void main(String arg[])
    {
        Properties gfg = new Properties();
        Set URL;
        String str;

        gfg.put("ide",
                "ide.geeksforgeeks.org");
        gfg.put("contribute",
                "write.geeksforgeeks.org");
        gfg.put("quiz",
                "www.geeksforgeeks.org");

        // checking what's in table
        System.out.println("Current Properties: "
                           + gfg.toString());

        System.out.println("\nCloning the Properties");
        Properties cloned = (Properties)gfg.clone();

        // checking what's in table now
        System.out.println("Cloned Properties: "
                           + cloned.toString());
    }
}

Output:

Current Properties: {contribute=write.geeksforgeeks.org, quiz=www.geeksforgeeks.org, ide=ide.geeksforgeeks.org}

Cloning the Properties
Cloned Properties: {contribute=write.geeksforgeeks.org, quiz=www.geeksforgeeks.org, ide=ide.geeksforgeeks.org}

Example 2:

// Java code illustrating clone() method

import java.util.*;

class PropertiesDemo {
    public static void main(String arg[])
    {
        Properties gfg = new Properties();
        Set URL;
        String str;

        gfg.put(1, "Geeks");
        gfg.put(2, "GeeksforGeeks");
        gfg.put(3, "Geek");

        // checking what's in table
        System.out.println("Current Properties: "
                           + gfg.toString());

        System.out.println("\nCloning the Properties");
        Properties cloned = (Properties)gfg.clone();

        // checking what's in table now
        System.out.println("Cloned Properties: "
                           + cloned.toString());
    }
}

Output:

Current Properties: {3=Geek, 2=GeeksforGeeks, 1=Geeks}

Cloning the Properties
Cloned Properties: {3=Geek, 2=GeeksforGeeks, 1=Geeks}

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