package dk.itu.oop.lecture3;
import java.util.Vector;

class Sir {
	final private String name;
	public Sir(String name) {
		if (find(name) != null)
			throw new Error("Do not duplicate Sir " + name);
		this.name = name;
		allSirs[numberOfSirs] = this;
		numberOfSirs ++;
	}
	public String toString(){return "Sir " + name;}
	
	// Static members
	private static Sir[] allSirs = new Sir[250];
	private static int numberOfSirs = 0;
	private static Sir find(String name){
		int index = 0;
		while (index < numberOfSirs){
			if (allSirs[index].name == name ) 
				return allSirs[index];
			index ++;
		}
		return null;
	}
	
	public static Sir getNewOrFind(String name){
		Sir sn = find(name);
		if (sn != null) 
			return sn;
		else{
			sn = new Sir(name);
			return sn;
		}
	}
}