public static void main(String[] args) { Computer pravetz = new Computer(); pravetz.year = 1986; pravetz.price = 980.90; pravetz.hardDiskMemory = 16; pravetz.freeMemory = 13; pravetz.operationSystem = "MS DOS"; pravetz.isNotebook = false; Computer asus = new Computer(); asus.year = 2015; asus.price = 3200; asus.hardDiskMemory = 1_024_000; asus.freeMemory = 512_000; asus.operationSystem = "Windows 7"; asus.isNotebook = true; pravetz.changeOperationSystem("Windows 3.11"); asus.useMemory(100); System.out.println("Year: " + pravetz.year); System.out.println("Price: " + pravetz.price + " USD."); System.out.println("HDD memory: " + pravetz.hardDiskMemory + " mb"); System.out.println("HDD free memory: " + pravetz.freeMemory); System.out.println("Operation System: " + pravetz.operationSystem); System.out.println( (pravetz.isNotebook) ? "The computer is a notebook." : "The computer is not a notebook."); System.out.println(); System.out.println("Year: " + asus.year); System.out.println("Price: " + asus.price + " USD."); System.out.println("HDD memory: " + asus.hardDiskMemory + " mb"); System.out.println("HDD free memory: " + asus.freeMemory); System.out.println("Operation System: " + asus.operationSystem); System.out.println( (asus.isNotebook) ? "The computer is a notebook." : "The computer is not a notebook."); }