Method startsWith

src/main/java/org/apache/commons/lang3/Strings.java:1422–1431

Tests if a CharSequence starts with a specified prefix. nulls are handled without exceptions. Two null references are considered to be equal. Case-sensitive examples Strings.CS.startsWith(null, null) = true Strings.CS.startsWith(null, "abc") = fals

(final CharSequence str, final CharSequence prefix)

     * @return {@code true} if the CharSequence starts with the prefix or both {@code null}
     */
    public boolean startsWith(final CharSequence str, final CharSequence prefix) {
        if (str == null || prefix == null) {
            return str == prefix;
        }
        final int preLen = prefix.length();
        if (preLen > str.length()) {
            return false;
        }
        return CharSequenceUtils.regionMatches(str, ignoreCase, 0, prefix, 0, preLen);
    }

    /**
     * Tests if a CharSequence starts with any of the provided prefixes.