Here we are going to look at the approach of sorting an ArrayList of custom objects by using a property.
1. Create a getter function which returns the value stored in the class variable.
2. Create a list and use sort() function which takes the values of the list as arguments and compares them with compareTo() method.
3. This function will then return a positive number if the first argument’s property is greater than the second’s, negative if it is less and zero if they are equal.
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