package Wednesday;

public class HighDefTV extends TV {
	private static String DIGITAL_CONVERTER = "1280DPI";
	private String digitalConverter;
	
	public HighDefTV() {
		super();   // We don't need it.  Why???
		digitalConverter = DIGITAL_CONVERTER;
	}
	
	/* Calls super class constructor by using super */
	public HighDefTV(int diagonalLength, String brand, 
					String digitalConverter) {
		super(diagonalLength, brand);
		this.digitalConverter = digitalConverter;
	}
	
	public String getDigitalConverter() {
		return digitalConverter;
	}
	
	/* overrides toString and calls the toString method of the superclass */
	public String toString() {
		return super.toString() + ", Digital Converter: " + digitalConverter;
	}
	
	/* overloads toString and uses the other toString() to generate result */
	public String toString(int indentation) {
		String result ="";
		for (int i=0; i<indentation; i++)
			result += " ";
		
		
		result += toString();
		return result;
	}
	
	public void setDigitalConverter(String digitalConverter) {
		this.digitalConverter = digitalConverter;
	}
	
	/* Implementation of abstract method */
	public void processAndDisplaySignal() {
		System.out.println("Processing and Displaying high definition signal.");
	}
	
	public static void main(String[] args) {
		HighDefTV tvSet1 = new HighDefTV();
		System.out.println(tvSet1);
		
		HighDefTV tvSet2 = new HighDefTV(50, "GE", "4500DPI");
		System.out.println(tvSet2);
		
		/* Which toString will be called */
		TV temp = tvSet2;
		System.out.println(temp);
		
		/* Calling the overloaded toString method */
		System.out.println(tvSet2.toString(10));
		
		/* Changing the channel (Trace the set of methods that are called */
		tvSet2.changeChannel(24);
	}
}