how do i convert this code from .txt file to .java file

- O X Cat.java - Notepad Edit Format View File Help public class Cat{ int catAge; public Cat(String name) { // This constructor has one parameter, name. System.out.println("Name chosen is :" + name); public void setAge( int age ) { catAge = age; public int getAge() { System.out.println("Cat's age is :" + catAge ); return catAge; public static void main(String [largs) { /* Object creation */ Cat myCat = new Cat( "Mochi" ); /* Call class method to set cat's age */ myCat.setAge( 2 ); /* Call another class method to get cat's age */ myCat.getAge(); /* You can access instance variable as follows as well */ System.out.println("Variable Value :" + myCat.catAge )