Every Java program contains one or more methods, which are pieces of code that perfiom tasks.
Every application has a main method, or the entry point to the application.
public static void main(String[] args)
{
System.out.println("Welcome to the Invoice Total Calculaor");
}
How to name a method:
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Use a strong action verb.
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Start with a lower case word followed by capital letter words.
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Use letters and numbers only
Use the prefixes get and set for getter and setter methods. Getter methods merely return the value of a instance variable; setter methods change the value of a instance variable.
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getBalance – getter
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setBalance – setter
If the method returns a boolean value, use is or has as the prefix for the method name.
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hasCredit
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isValidCustomer