package runnable;

public class Eraser implements Runnable{
	private boolean active;
	private String mask;
	public Eraser(){
		this('*');
	}
	public Eraser(char maskChar){
		active=true;
		mask="\010"+maskChar;
	}
	public void setActive(boolean active){
		this.active=active;
	}
	public boolean isActive(){
		return active;
	}
	public void run(){
		while(isActive()){
			System.out.print(mask);
			try{
				Thread.currentThread().sleep(50);
			}
			catch(InterruptedException e){
				e.printStackTrace();
			}
		}
	}

}