// Page 206-208

public class Undergraduate extends StudentRec
{
	private int level;
	public Undergraduate()
	{
		super();
		level = 1;
	}
	public Undergraduate(String na, int nu, int le)
	{
		super(na, nu);
		setLevel(le);
	}
	public void set(String na, int nu, int le)
	{
		super.set(na, nu);
		this.setLevel(le);
	}
	public int getLevel()
	{
		return level;
	}
	public void setLevel(int newLevel)
	{
		if(newLevel >=1 && newLevel <=4)
			level = newLevel;
		else
		{
			System.out.println("Illegal level");
			System.exit(0);
		}
	}
	public String toString()
	{
		String temp = null;
		if(level == 1) temp = "Fresh";
		else if(level == 2) temp = "Soph";
		else if(level == 3) temp = "Junior";
		else if(level == 4) temp = "Senior";
		else
		{
					System.out.println("Illegal level");
					System.exit(0);
		}
		return super.toString() +		// super CAN NOT MISS
				"\nGrade: " + temp;
	}
	public boolean equals(Undergraduate other)
	{
		return super.equals( other ) && this.level == other.level;
	}
}