Since a Java array has a range of, when an attempt is made to access an index outside this range, an ArrayIndexOutOfBoundsException is thrown. an index that is less than 0, or equal to or greater than the length of the array. It occurs when a program attempts to access an invalid index in an array i.e. The ArrayIndexOutOfBoundsException is one of the most common errors in Java. What Causes ArrayIndexOutOfBoundsException Since the ArrayIndexOutOfBoundsException is an unchecked exception, it does not need to be declared in the throws clause of a method or constructor. 20K views 3 years ago Kotlin Course for Beginners and Java Devs In part 10 of the Kotlin beginner tutorial, we will learn how to use for-loops to iterate through arrays, ranges, and anything. The index is either negative or greater than or equal to the size of the array. We can use the spread operator that basically spreads the elements to make arrays compatible with varargs.The ArrayIndexOutOfBoundsException is a runtime exception in Java that occurs when an array is accessed with an illegal index. Returns an Iterator that wraps each element produced by the original iterator into an IndexedValue containing the index of that element and the element itself.
fun sampleFunction(args : Array)) // array to varags
To call a function that accepts Array we must pass the arrays as an argument in the function call. The for loop in Kotlin is used to iterate or cycle though the elements of array, ranges, collections etc. You can write a function that accepts an array as a parameter with a type, for example, our main function() accepts an array of Strings. val allColours = arrayOf("red", "blue", "green", "White", "black")ĪllColours. toMutableList() asList() in arraysĪsList() function returns a List that wraps the original array. Kotlin standard library has toList() function which will convert the given array into a list Immutable array val allColours = arrayOf("red", "blue", "green", "White", "black")ĪllColours. Println(allColours.lastIndex) convert array to list in kotlin LastIndex is always equal to array.size -1 val allColours = arrayOf("red", "blue", "green", "White", "black") LastIndex property in arrays returns the last valid index if you try to access any index after the last index you might face.
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