Can switch-case contains string?

It is recommended to use String values in a switch statement if the data you are dealing with is also Strings . The expression in the switch cases must not be null else, a NullPointerException is thrown (Run-time). Comparison of Strings in switch statement is case sensitive.

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Which is faster switch case or if else?

As it turns out, the switch statement is faster in most cases when compared to if-else , but significantly faster only when the number of conditions is large. The primary difference in performance between the two is that the incremental cost of an additional condition is larger for if-else than it is for switch .

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