BELOW ARE THE ERRORS I AM GETTING IN MY CODE IN THE PICTURES. BELOW THAT IS ALL MY CODE WHY AM I GETTING ERROS WITH ARRAYLISTA ND CIRCUITS

import java.util.ArrayList;

public abstract class Circuit { public abstract double getResistance(); }

public class Resistor extends Circuit { private double resistance;

public Resistor(double resistance) { this.resistance = resistance; }

public double getResistance() { return resistance; } }

public class Serial extends Circuit { private ArrayList circuits;

public Serial() { circuits = new ArrayList(); }

public void add(Circuit circuit) { circuits.add(circuit); }

public double getResistance() { double resistance = 0.0; for (Circuit circuit : circuits) { resistance += circuit.getResistance(); } return resistance; } }

public class Parallel extends Circuit { private ArrayList circuits;

public Parallel() { circuits = new ArrayList(); }

public void add(Circuit circuit) { circuits.add(circuit); }

public double getResistance() { double resistance = 0.0; for (Circuit circuit : circuits) { resistance += 1.0 / circuit.getResistance(); } return 1.0 / resistance; } }

public class Parallel extends Circuit \{ private Acraylist circuits; public Parallel() \{ circuits = new Acraylist(); \} public void add(Circuit circuit) circuits.add(circuit); \} public double getResistance() double resistance =0.0; for (Circuit circuit : circuits) \{ resistance += 1.0/ circuit.getResistance(); \} return 1.0 / resistance; D) Q1.java D) Vehicle.java D) publicst.java D) TheaterSeat... D) Combolock.java D) ComboLockTe