java - IndexOutOfBounds error when trying to get last value -

so suppose loop through array , finding @ points array starts new year , how many days in year. problem have can't last year of array 2013.

2010 [25202, 25567) 365 days.

2011 [25567, 25932) 365 days.

2012 [25932, 26298) 366 days.

exception in thread "main" java.lang.arrayindexoutofboundsexception: 26663 @ weatheranalysis.yearsarray(weatheranalysis.java:213)       public static void yearsarray(string a[]) { // array find amnount of days in year         int range1 = 0;         int range2 = 1;         string year = "";           (int = 0; <= a.length-1; i++) {              string s = a[i];             string p = a[i+1];                if (s.equals(p)) {                 range2 ++;              }else{                   year = s;                 system.out.println(year+" ["+range1+", "+range2 +") "+ (range2-range1)+" days");                 range1 = range2;                 range2 ++;             }            }        } } 

your loop goes a.length-1. last index in array. however, try access index after when string p = a[i+1]. trying access i+1, outside bounds of array.

here's debugging tip: when exception says at weatheranalysis.yearsarray(weatheranalysis.java:213), 213 line number exception being thrown from. line string p = a[i+1] on it.