package exam1;

public class WordFilter {

    private String word;

    public WordFilter(String word) {
        this.word = word;
    }

    public boolean detect(String message) {

        if (message == null) {
            throw new IllegalArgumentException();
        }

        if (word == null || word.isEmpty()) {
            return false;
        }

        String[] arrayOfString = message.split(":");
        if (arrayOfString.length != 2){
            throw new IllegalArgumentException();
        }
        if (arrayOfString[1].indexOf(this.word) >= 0) {
            return true;
        }
        return false;
    }

    public String censor(String message) {
        if (detect(message)) {
            return message.replace(word, "<censored>");
        }
        return message;
    }
}