What is the practical use of the Java compareTo method?

Question

In the Java textbook that I am studying, he says that “lexicographical ordering” is used for the “whole”. I understand how it works, but in what specific way is it used in programming?

Answer 1

All built-in sorting methods use it when sorting non-primitives.

Answer 2

Let's say you wanted to sort the glasses of water, the objects themselves are called Glass.

Now let's say that a Glasscan have the height and amount of water that it holds.

, Glasses. ?

, compareTo. , , . , , .

Answer 3

, , , , , , re .

Answer 4

String s, . < 0, = 0 > 0 , String .

Answer 5

compareTo() - - Java.

, , <, == > . ( , , equals() moreThan() .)

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• , . , .

Answer 6

compareTo int, , , .

, Comparable . Java, , (String, Double, BigInteger,...).

compareTo :

• x.compareTo(y) - of y.compareTo(x), x y
• x.compareTo(y) > 0 y.compareTo(z) > 0, x.compareTo(z) > 0.
• equals() .

:
http://leepoint.net/notes-java/data/expressions/22compareobjects.html
http://www.javapractices.com/topic/TopicAction.do?Id=10

Answer 7

This most common use is a comparison function when sorting a list of strings. One call compareToindicates whether one line goes before another, after another, or the same as on the other line.