I need help making a CircuitTester in java for the following code, needing an ac

Question

I need help making a CircuitTester in java for the following code, needing an actual and expected states :public class Circuit { private int firstSwitchState = 0; private int secondSwitchState = 0; private int lampState = 0; // 0 for down and 1 for up public int getFirstSwitchState() { return firstSwitchState; } public int getSecondSwitchState() { return secondSwitchState; } // 0 for off and 1 for on public int getLampState() { return lampState; } public void toggleFirstSwitch() { firstSwitchState = -1 * firstSwitchState + 1; toggleLampState(); } public void toggleSecondSwitch() { secondSwitchState = -1 * secondSwitchState + 1; toggleLampState(); } private void toggleLampState() { lampState = -1 * lampState + 1; } }

Explanation / Answer

class Circuit
{
   private int firstSwitchState = 0;
   private int secondSwitchState = 0;
   private int lampState = 0; // 0 for down and 1 for up
   public int getFirstSwitchState()
   {
       return firstSwitchState;
   }
   public int getSecondSwitchState()
   {
       return secondSwitchState;
   } // 0 for off and 1 for on
   public int getLampState()
   {
       return lampState;
   }
   public void toggleFirstSwitch()
   {
       firstSwitchState = -1 * firstSwitchState + 1;
       toggleLampState();
   }
   public void toggleSecondSwitch()
   {
       secondSwitchState = -1 * secondSwitchState +1;        toggleLampState();
   }
   private void toggleLampState()
   {
       lampState = -1 * lampState + 1;
   }
}

class CircuitTester
{
   public static void main(String args[])
   {
       Circuit o=new Circuit();
       int a=o.getFirstSwitchState();      
       if(a==0)
           System.out.println("Switch is Off");
       else
           System.out.println("Switch is Off");

       int b=o.getFirstSwitchState();      
       if(b==0)
           System.out.println("Switch is Off");
       else
           System.out.println("Switch is Off");
      
       int c=o.getLampState();      
       if(c==0)
           System.out.println("Button is Down");
       else
           System.out.println("Button is Up");
      
       o.toggleFirstSwitch();
       o.toggleSecondSwitch();
   }
}

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