Java 17 changes

Advertisements. A switch statement allows a variable to be tested for equality against a list of values . Each value is called a case, and the variable being switched on is checked for each case.

switch statement is more efficient than a set of nested ifs . two case constants in the same switch can have identical values. switch statement can only test for equality, whereas if statement can evaluate any type of boolean expression. it is possible to create a nested switch statements.

The Java SE 17 release introduces pattern matching for switch expressions and statements (JEP 406) as a preview feature. Pattern matching provides us more flexibility when defining conditions for switch cases.28 Eki 2021