Java string matching problem

I face a very basic problem Sometimes small things can take a whole day:（

I try to match 2 strings, and if it matches, it should return true

Now I'm using it

if (var1.indexOf(var2) >= 0) {
return true;
}

However, if the value of VAR1 is "maintain" and the value of var2 is "inta" or "ain", it still returns true: (. Is there any method in Java that can perform full-text matching instead of partial matching? For example

if("mango"=="mango"){
return true;
}

Thank you!

Solution

Why not use the built-in string equals () method?

return var1.equals(var2);