Example code of treemap sorting in Java

1. Define the sorting method of treemap

Use the comparator object as a parameter

It should be noted that the sorting method is for keys, not values. If you want to target values, you need some more cumbersome methods (rewrite some methods)

2. Define the comparison method of the objects inside

Inherit comparable interface

3. All codes

Sort by screen price

Screen. java

TestScreen. java

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