Get String text which is wrapped in a object

Question

I want to create objects of a class which hold a specific string value. The string value will be passed through the constructor of the class, like this

public class Class_A {

   private String id;
   
   public Class_A (String id) {
      this.id = id;
   }
}

Class_A is a class in my core package. Now I have Class_B, which is a class in my service package. Class_B holds a function for creating a list of Class_A objects with individual strings.

How I can get the specific string value of each Class_A object when I access the list?

Answer 1

You can provide a get method for the string.

public class Class_A {

   private String id;
   
   public Class_A (String id) {
      this.id = id;
   }

   public String getId(){
      return id;
   }

   public String toString(){
     return id;
   }
}