Detailed explanation of the method of exchanging two data in Java

Java method for exchanging two data

1: Using arrays, that is, put the numbers to be exchanged in the array first. For example, it may be used in some array sorting

2: By creating an object, the values of two integers are introduced into the object, and the exchange of two integers can be realized. Of course, if you want other basic data types, you only need to change the type in a.

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