comparing part of a string regardless the other part

[Norgy]

how can i compare part of a string with another string regardless the rest of the string?
for example: if i want to find whether a string has an underscore or not

if(x[i].equals("anything_anything"))

i want this if condition to return true
how can i do that ?

[Norgy]

i found a function called "contains" that do what i need

if(x[i].contains("_"))

thanks :)