## Why is this an issue?

Most checks against an `indexOf` value compare it with -1 because 0 is a valid index. Checking against `> 0` ignores the first element, which is likely a bug.

    String name = "ishmael";

    if (name.indexOf("ish") > 0) { // Noncompliant
      // ...
    }

Moreover, if the intent is merely to check the inclusion of a value in a `String` or a `List`, consider using the `contains` method instead.

    String name = "ishmael";

    if (name.contains("ish") {
      // ...
    }

If the intent is really to skip the first element, comparing it with `>=1` will make it more straightforward.

    String name = "ishmael";

    if (name.indexOf("ish") >= 1) {
      // ...
    }

This rule raises an issue when an `indexOf` value retrieved from a `String` or a `List` is tested against `> 0`.