java.lang.NullPointerException

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  • java.lang.NullPointerException line 13
    via by metalcross911,
  • Trying to learn java, I have a problem.
    via by 807599,
    • java.lang.NullPointerException at TicketPriceWithDiscount.main(TicketDiscount.java:13)
    No Bugmate found.