java - Scanner shows exception InputMisMatchException - 


static long arraymaxmin[];     public static void main(string[] args) {       try{    scanner in = new scanner(system.in);             long[] arr = new long[5];              for(int arr_i=0; arr_i < 5; arr_i++){                  arr[arr_i] =long.valueof(math.abs(in.nextlong()));               }            arraymaxmin = calculate(arr);     }catch(inputmismatchexception e)     {         e.getmessage();     }       try{  long[] array = findmaxmin(arraymaxmin);         for(int ij=0;ij<array.length;ij++){             system.out.print(array[ij]+" ");         }       }catch(nullpointerexception e){           e.getmessage();       } }        public static long[] calculate(long[] arraymaxmin ){     int max=0,min=0;     long[] outputarray={0,0,0,0,0};     for(int i=0;i<arraymaxmin.length;i++){         for(int j=0;j<arraymaxmin.length;j++){             if(i==j){                 //do nothing             }else {                 outputarray[i] = outputarray[i]+arraymaxmin[j];             }         }     } return outputarray; }       public static long[] findmaxmin(long[] arr){        long max=0,min=0;        try{  for(int i=0;i<arr.length;i++){            if(max<arr[i]){                max= arr[i];            }else{                min= arr[i];            }        }       long output[]={min,max};        return output;    }catch(nullpointerexception e){        e.getmessage();        return null;    }      }

well trying hackerrank question here, , don't possible reason getting testcases failing, in min-max problem.

i don't it, lacking here or case lacking in ,please me ,well presume lacking if input such of 7777777777777777777777 fails, can problem goes like

given 5 positive integers, find minimum , maximum values can calculated summing 4 of 5 integers. print respective minimum , maximum values single line of 2 space-separated long integers.

input format

a single line of 5 space-separated integers.

constraints

each integer in inclusive range . {1,10^9}

print 2 space-separated long integers denoting respective minimum , maximum values can calculated summing 4 of 5 integers. (the output can greater 32 bit integer.)

as can see, minimal sum , maximal sum . thus, print these minimal , maximal sums 2 space-separated integers on new line.

hints: beware of integer overflow! use 64-bit integer.

the fisrt thing wrong here fact swallowing exeptions...

here: 

catch(inputmismatchexception e) {     e.getmessage(); }

should 

 catch (inputmismatchexception e) {      e.printstacktrace();  }

then able see why app crashing:

java.util.inputmismatchexception: input string: "7777777777777777777777"

this input: 7777777777777777777777 not valid long...

that why got professor hint: use 64-bit integer. 7777777777777777777777 bigger that... invalid input making scanner crash trying read long..


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