Summary
The Comparator interface in Java is found in the java.util package and contains two methods: compare(Object obj1, Object obj2) and equals(Object obj).
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The compare() method is used to order the objects of a user-defined class.
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The equals() method is used to check if two objects are equal.
Both methods are necessary for implementing the Comparator interface.
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Comparators can also be used to control the order of certain data structures (such as sorted sets or sorted maps ), or to provide an ordering for collections ...
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Summary
Java Comparator interface Java Comparator interface is used to order the objects of a user-defined class. This interface is found in java.util package and contains 2 methods compare(Object obj1,Object obj2) and equals(Object
Java Comparator - javatpoint
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How to compare two objects in Java? How do Comparator and Comparable differ? How to ... Java 8 on (and it will ideally also offer us to refactor the code):
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Comparators can also be used to control the order of certain data structures (such as sorted sets or sorted maps ), or to provide an ordering for collections ...
Comparator (Java Platform SE 7 )
oracle.com
