i am getting error in java code . error is like mismatch input .

Question

code is available on code play as knapsack code but it always show error
please help

Answer 1

InputMismatchException in most cases occur when your code expects a certain data type to be entered but rather the user has entered something else.

Example:

As you can see below if i were to enter something like "2.47484", an InputmismatchException will be thrown.

int getNum = scanner.nextInt();

There is many ways to prevent the system from crashing. For example you can use the scanner validation methods such has hasNexInt() prior to you assigning the input value to a variable. If the expression returns true then its safe to assign the value to a variable, else print a message to the user and say whats wrong.

Answer 2

thank you