Closed 15 years ago. Possible Duplicates: difference between compare () and compareTo () Java: What is the difference between implementing Comparable and Comparator? What are the keys differences …

Mar 30, 2018 · Comparable and Comparator are generic interfaces that allow to compare instances of the type defined in the generic (subclasses included). The main difference between them is that …

Feb 15, 2010 · You create separate classes that implement the Comparator interface (or use lambdas in Java 8+) and define the compare () method. This is more flexible since you can create different ways …

Jan 7, 2009 · From JavaNotes: a.compareTo(b): Comparable interface : Compares values and returns an int which tells if the values compare less than, equal, or greater than. If your class objects have a …

Sep 17, 2009 · The class itself must implements the java.lang.Comparable interface in order to be able to compare its instances. Comparator A comparator object is capable of comparing two different …

Mar 27, 2014 · Comparable defines that instances of a class have a natural ordering, e.g. numbers which can be ordered small to big. In other cases this defines the default ordering, e.g. when using …

May 7, 2022 · 4 There's a substantial distinction between the use cases for Comparator and Comparable. Implementing the Comparable interface is suitable for objects that have a natural order …

Comparable Interface- This interface imposes a total ordering on the objects of each class that implements it. This ordering is referred to as the class's natural ordering, and the class's compareTo …

Feb 25, 2012 · In other words, a class that implements Comparable is capable of comparing itself to other objects of the same kind. From the Java documentation on Comparator: A comparison …

You can just create two Comparator<Dog>, one which sorts by age and the other by name. When calling a method like sort, you provide as argument the comparator you want to use in order to get …