I am trying to make a ferry simulator with one ferry that works like a stack and another like a queue. I have a working class for stacks and queues with pop/push; I am trying to figure out how to simply this code for the ferry class.import java.util.Scanner;public class Ferry {    static Stack ferry1 = new Stack();    static Queue ferry2 = new Queue();    Stack ferryStack = new Stack();    static int car1, car2, car3, car4, car5, car6, car7, car8, car9, car10, car11, car12, car13, car14, car15, car16, car17, car18, car19, car20;    static int getTag(){        Scanner tag = new Scanner(System.in);        int carID;        System.out.print(Enter in a tag number.);        carID = tag.nextInt();        return carID;    }    public static Queue ferry2Loading(){        car1 = getTag();        car2 = getTag();        car3 = getTag();        car4 = getTag();        car5 = getTag();        car6 = getTag();        car7 = getTag();        car8 = getTag();        car9 = getTag();        car10 = getTag();        car11 = getTag();        car12 = getTag();        car13 = getTag();        car14 = getTag();        car15 = getTag();        car16 = getTag();        car17 = getTag();        car18 = getTag();        car19 = getTag();        car20 = getTag();        ferry2.queuePush(car1);        ferry2.queuePush(car2);        ferry2.queuePush(car3);        ferry2.queuePush(car4);        ferry2.queuePush(car5);        ferry2.queuePush(car6);        ferry2.queuePush(car7);        ferry2.queuePush(car8);        ferry2.queuePush(car9);        ferry2.queuePush(car10);        ferry2.queuePush(car11);        ferry2.queuePush(car12);        ferry2.queuePush(car13);        ferry2.queuePush(car14);        ferry2.queuePush(car15);        ferry2.queuePush(car16);        ferry2.queuePush(car17);        ferry2.queuePush(car18);        ferry2.queuePush(car19);        ferry2.queuePush(car20);         return ferry2;    }    public static Stack ferry1Loading(){        car1 = getTag();        car2 = getTag();        car3 = getTag();        car4 = getTag();        car5 = getTag();        car6 = getTag();        car7 = getTag();        car8 = getTag();        car9 = getTag();        car10 = getTag();        car11 = getTag();        car12 = getTag();        car13 = getTag();        car14 = getTag();        car15 = getTag();        car16 = getTag();        car17 = getTag();        car18 = getTag();        car19 = getTag();        car20 = getTag();        ferry1.stackPush(car1);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car2);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car3);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car4);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car5);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car6);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car7);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car8);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car9);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car10);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car11);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car12);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car13);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car14);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car15);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car16);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car17);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car18);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car19);        System.out.println(ferry1.stackPeek());        ferry1.stackPush(car20);        System.out.println(ferry1.stackPeek());        return ferry1;    }public static void main(String args[]){    ferry1Loading();    ferry2Loading();        //System.out.println(CARS ON THE FERRY +ferry1+);        //ferry1.push(s5gsg);//      //      Stack ferryStack = new Stack(20);//      System.out.println(ferryStack.peek());//      ferryStack.push(2b);//      System.out.println(ferryStack.peek());//      ferryStack.push(665sg);//      System.out.println(ferryStack.peek());//      ferryStack.push(12sgs);//      System.out.println(ferryStack.peek());//      ferryStack.push(3sgsg2);//      System.out.println(ferryStack.peek());//      ferryStack.pop();//      ferryStack.push(2sg0);//      System.out.println(ferryStack.peek());    }}Stack Code:public class Stack {    int maxSize;    int top;    String arr[];    public Stack(){        int n = 0;        maxSize = n;        arr = new String[maxSize];        top = 0;    }    public void stackPush(String str){        if(top < maxSize){        arr[top] = str;        top++;        }else{        System.out.println(Error Stack Overflow!!);    }    }    public String stackPop(){        if(!this.empty()){        String popped = this.peek();        arr[top-1] = null;        top--;        return popped;    }else{        return null;    }        }    public String peek(){        if(top > 0){        return arr[top-1];    }else{        return null;    }    }    public boolean empty(){    if (top == 0){        return true;    }else{        return false;    }    }}Queue Code:public class Queue {int maxSize;int top;int rear;String arr[];public Queue(){    int n = 0;    maxSize = n ;    arr = new String[maxSize];    top = -1;    rear = 0;}public void queuePush(String cars){    if(top < maxSize - 1){        top++;        arr[top] = cars;        //display();//  }else{//      System.out.println(Error Queue Overflow!!);    }}public void queuePop(){    if(top >= rear){        rear++;        //display();    }else{        System.out.println(Error);    }//}//public void display() {  //  if (top >= rear) {  //   System.out.println(Elements in Queue : );  //   for (int i = rear; i <= top; i++) {  //    System.out.println(arr[i]);  //   }  //  }  // }  //  // public static void main(String[] args) {  //  Queue queueDemo = new Queue(20);  //  queueDemo.pop();  //  queueDemo.push(23);  //  queueDemo.push(2);  //  queueDemo.push(73);  //  queueDemo.push(21);  //  queueDemo.pop();  //  queueDemo.pop();  //  queueDemo.pop();  //  queueDemo.pop();  // }  }}
Simple FIFO and LIFO ferry simulator
java;beginner;queue;stack