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This article mainly introduces how to replace java switch, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Replace switch

The keyword switch statement is used for multi-conditional judgment. The function of the switch statement is similar to that of the if-else statement, and the performance of the two statements is similar. Therefore, it cannot be said that the switch statement will degrade the performance of the system. However, in most cases, there is room for performance improvement in switch statements.

Take a look at the following example:

Public static void main (String [] args) {long start = System.currentTimeMillis (); int re = 0; for (int I = 0

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