I am having trouble with this output was wondering if someone could offer a third eye to see what I am doing wrong.

Code:
public class ContestantTester
{

	public static void main(String[] args)
	{
		Contestant contestant = new Contestant("Jon Smith");

		System.out.print("Expected Name: Jon Smith------------------------------>");
		System.out.println("Actual Name: " + contestant.getWinnings());

		contestant.addWinnings(100.0);
		contestant.addWinnings(200.0);

		System.out.print("Expected Winnings: 300.0------------------------------>");
		System.out.println("Actual Winnings: " + contestant.getWinnings());

		System.out.print("Expected toString: [name=Jon Smith, winnings=$300.0]-->");
		
		// WHEN YOU PASS AN OBJECT REFERENCE TO PRINTLN, THE toString() METHOD
		// FOR THE CLASS (IN THIS CASE CONTESTANT) IS AUTOMATICALLY CALLED
		System.out.println("Actual toString: " + contestant);

		contestant.bankrupt();
		System.out.print("Expected Winnings: 0.0-------------------------------->");
		System.out.println("Actual Winnings: " + contestant.getWinnings());

		contestant.addWinnings(150.0);

		System.out.print("Expected Winnings: 150.0------------------------------>");
		System.out.println("Actual Winnings: " + contestant.getWinnings());

	}

}
Here is my Class:

Code:
public class Contestant
{
	private double winnings1 = 100.00;
	private double winnings2 = 200.00;
	private String Contestant;
	
	public Contestant(String Contestant)
	{
		String contestant = Contestant;
	}

	public void setWinnings1(double winnings1)
	{
		winnings1 = 100.00; //establishing the value as 100
	}
	
	public void setWinnings2(double winnings2)
	{
		winnings2 = 200.00; //establishing the value as 200
	}
	
	public String getContestant()
	{
			String contestant = Contestant;
			return contestant;
	}
			
	public Object bankrupt() {
		return null;
	}

	public String getWinnings() {
		int getWinnings = 100;
		getWinnings++;
		return null;
	}

	void addWinnings(double d) {
		
	}
	
}
The values that are coming up are NULL. What am I going wrong. I am new to this Java Programming and have done well so far but it doesn't seem like it is clicking for me at this point.