Comparable and comparator both are an interface that can be used to sort the elements of the collection. Comparator interface belongs to java.util package while comparable belongs to java.lang package ...

Original List: Name: Alice, Age: 28, Salary: 45000.0 Name: Bob, Age: 32, Salary: 50000.0 Name: Charlie, Age: 25, Salary: 40000.0 Name: David, Age: 30, Salary: 55000.0 ...