You should have one main class to print values and all other methods in different class
Scenario: You are going to a store to purchase a phone. If you pick apple phone, you will get a 10% discount. if you pick Samsung phones, there is a 5% tax on it but no discount, if you pick Goole phone, then there is no tax or discount, you would have to pay for actual price.
Apple Phone = $899.99
Samsung Phone = $799.78
Google Phone = $699.98
Create a method to calculate discount
Create a method to calculate tax
Print out result (Phone name and Price ) in main method.