Java stuff. When you want to derivate a String from a String you already have, lets say you want to get "burger" out of "hamburger" you apply. stringName.substring(3), this is the same as having "burger" since it will take "hamburger" and from the position in 3 (programming uses 0 as the first position), it will display the rest of the String.
If you want from certain position to another, lets say "mistaken" and you just want "stake", you will need to apply: stringName.substring(2,6), this will give you "stake".
public int resultado(String buscado, String origen) {
The act of inserting a teabag attached to very long string into someone’s asshole until it reaches their stomach, then slowly pulling out the teabag, which will have absorbed a lot of the person’s inner colon and will have a foul grey-ish yellow texture similar to your mother’s homemade soup or grits.