Create an ArrayList with multiple object types?

Question

How do I create an ArrayList with integer and string input types? If I create one as:

List sections = new ArrayList 

        

Answer 1

You can use Object for storing any type of value for e.g. int, float, String, class objects, or any other java objects, since it is the root of all the class. For e.g.

1. Declaring a class

   class Person {
   public int personId;
   public String personName;
   
   public int getPersonId() {
       return personId;
   }
   
   public void setPersonId(int personId) {
       this.personId = personId;
   }
   
   public String getPersonName() {
       return personName;
   }
   
   public void setPersonName(String personName) {
       this.personName = personName;
   }}
   

2. main function code, which creates the new person object, int, float, and string type, and then is added to the List, and iterated using for loop. Each object is identified, and then the value is printed.

       Person p = new Person();
   p.setPersonId(1);
   p.setPersonName("Tom");
   
   List