/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.text.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
 Properties props = new Properties();
            props.put("app.description", "{0} is a Spring Boot application");
            props.put("app.name", "MyApp");
            System.out.println(MessageFormat.format((String) props.get("app.description"),((String) props.get("app.name"))));
	}
}

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