To reproduce use:


public class test {

    static String fnCall(String str) {
        return str;
    }

    public static void main(String[] argv) {
        String atr = fnCall("test this");
        if (atr.indexOf("th") != 0) {
            System.out.println ("\"th\" is inside the string");
        } else {
            System.out.println ("\"th\" is not inside the string");
        }
        atr = fnCall("test this");
    }
}

jdb commands:

stop in test.main
run
next