<commit_before>package ru.stqa.pft.sandbox;

public class MyFirstProgram {
	public static void main(String[] args) {
		System.out.println("Hello, World!");
	}
}<commit_msg>add several functions (simple calculations)<commit_after>package ru.stqa.pft.sandbox;

public class MyFirstProgram {
	public static void main(String[] args) {
		hello("World");
		hello("John");
		hello("user");

		double l = 5;
		System.out.println("Площадь квадрата со стороной " + l + " равна " + area(l));

		double a = 4;
		double b = 7;
		System.out.println("Площадь прямоугольника со сторонами " + a + " и " + b + " равна " + area(a, b));
	}

	public static void hello(String somebody) {
		System.out.println("Hello, " + somebody + "!");
	}

	public static double area(double l){
		return l * l;
	}

	public static double area(double a, double b){
		return a * b;
	}
}
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