Machine.java

public class Machine {
	
	private Location loc;
	private boolean active = true;
	private int limit;
	
	public Machine(Location loc){
		this.loc = loc;
	}
	
	public void activate(){
		this.active = true;
	}
	
	public void deactivate(){
		this.active = false;
	}
	
	public void setLimit(int limit){
		this.limit = limit;
	}
	
	public boolean isActive(){
		return active;
	}
	
	public String getRegion(){
		return WorldGuard.getRegionName(loc);
	}
	
	public int getLimit(){
		return limit;
	}

}

Miner.java

public class Miner extends Machine {
	
	public Miner(Location loc){
		super(loc);
	}
	
	public void setLimit(){
		setLimit(10);
	}
	
	public void run(Location loc) {
		//Do stuff	
	}
	
}