Java Keywords और Identifiers

public class Main {
	public static void main(String[] args) {
		// int int = 5; // ILLEGAL - 'int' is a reserved keyword, not a valid identifier
		int total = 5;
		System.out.println(total);
	}
}

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public class Main {
	public static void main(String[] args) {
		int totalPrice = 250; // clear identifier instead of 'x'
		System.out.println(totalPrice);
	}
}

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public class Main {
	public static void main(String[] args) {
		int _count = 1;
		int $price = 2;
		int total2 = 3;
		// int 2total = 4; // ILLEGAL - cannot start with a digit
		System.out.println(_count + $price + total2);
	}
}

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// Define the class Main
public class Main {
	// Program entry point: the JVM starts running here
	public static void main(String[] args) {
		// Declare page and set it to "lowercase"
		String page = "lowercase";
		// Declare Page and set it to "uppercase"
		String Page = "uppercase";
		// Print a line to the console
		System.out.println(page + " is not the same identifier as " + Page);
	}
}

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public class Main {
	public static void main(String[] args) {
		int customerCount = 42; // clearer than 'cc'
		System.out.println(customerCount);
	}
}

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