Properties put(Object, Object) in Java

put(Object, Object): This method is available in java.util.Properties class of Java.

Syntax:

Object java.util.Properties.put(Object key, Object value)

This method takes two arguments. This method maps the specified key to the specified value in this hashtable.

Note: Neither the key nor the value can be null.

Parameters: One parameter is required for this method.

key: the hashtable key.

value: the value.

Returns: the previous value of the specified key in this hashtable, or null if it did not have one.

Exceptions: NA

Approach

Java

import java.util.Properties;

public class Propertiesput {
    public static void main(String[] args) {

        Properties properties = new Properties();

        properties.put("Hello", "World");
        properties.put("C++", "Program");
        properties.put("Java", "Program");

        System.out.println(properties);
    }
}

Output:

{Java=Program, C++=Program, Hello=World}