Why compareTo () should be consistent to equals () method in Java?

The 2 main differences are that: equals will take any Object as a parameter, but compareTo will only take Strings . equals only tells you whether they’re equal or not, but compareTo gives information on how the Strings compare lexicographically.

2) CompareTo must be in consistent with equals method e.g. if two objects are equal via equals() , there compareTo() must return zero otherwise if those objects are stored in SortedSet or SortedMap they will not behave properly .

2) CompareTo must be in consistent with equals method e.g. if two objects are equal via equals() , there compareTo() must return zero otherwise if those objects are stored in SortedSet or SortedMap they will not behave properly .

Java String compareTo() Method Example

The compareTo() method compares two strings lexicographically . The comparison is based on the Unicode value of each character in the strings. The method returns 0 if the string is equal to the other string.

The compareTo() method compares two strings lexicographically . The comparison is based on the Unicode value of each character in the strings. The method returns 0 if the string is equal to the other string.

The 2 main differences are that: equals will take any Object as a parameter, but compareTo will only take Strings . equals only tells you whether they’re equal or not, but compareTo gives information on how the Strings compare lexicographically.