The reason is that you would have to have space of 50 bytes in each of the arrays in the jagged array to accommodate the largest string. In this example, the largest string is of size 50.

The Java array size is set permanently when the array is initialized. The size or length count of an array in Java includes both null and non-null characters. Unlike the String and ArrayList, Java ...

The real strength of regular expressions however, lies in the handling of repetition. To illustrate this let’s take the example of needing to determine if a string contains a valid phone number.