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                # switch 分支語句 --- ### 問題 下面程序片段輸出結果是什么? ``` public class Test { public static void main(String[] args) { char mychar = 'd'; switch (mychar) { default: case 'x': System.out.println("x"); break; case 'y': System.out.println("y"); break; } } } ``` ### 結果 輸出x ### 結論 #### switch/case 語句是除了if/else 外常用的分支語句。需要注意的是,只要沒有遇到break語句,程序將一直運行,直到遇到break或者程序塊執行完成才退出。 #### default在前在后大不相同:在前面時,如果case條件都不滿足,則會順序執行case條件中的語句,有滿足case條件的情形,則會執行相應的case條件語句。
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