logstash-core/src/main/java/org/logstash/util/JavaVersion.java [39:84]:
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        this.version = version;
    }

    static JavaVersion parse(final String value) {
        if (value.matches("^0*[0-9]+(\\.[0-9]+)*$") == false) {
            throw new IllegalArgumentException(value);
        }

        final List<Integer> version = new ArrayList<Integer>();
        final String[] components = value.split("\\.");
        for (final String component : components) {
            version.add(Integer.valueOf(component));
        }
        return new JavaVersion(version);
    }

    public static int majorVersion(final JavaVersion javaVersion) {
        Objects.requireNonNull(javaVersion);
        if (javaVersion.version.get(0) > 1) {
            return javaVersion.version.get(0);
        } else {
            return javaVersion.version.get(1);
        }
    }

    private static int compare(final JavaVersion leftVersion, final JavaVersion rightVersion) {
        List<Integer> left = leftVersion.version;
        List<Integer> right = rightVersion.version;
        // lexicographically compare two lists, treating missing entries as zeros
        final int len = Math.max(left.size(), right.size());
        for (int i = 0; i < len; i++) {
            final int l = (i < left.size()) ? left.get(i) : 0;
            final int r = (i < right.size()) ? right.get(i) : 0;
            if (l < r) {
                return -1;
            }
            if (r < l) {
                return 1;
            }
        }
        return 0;
    }

    @Override
    public int compareTo(JavaVersion other) {
        return compare(this, other);
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tools/jvm-options-parser/src/main/java/org/logstash/launchers/JavaVersion.java [37:82]:
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        this.version = version;
    }

    static JavaVersion parse(final String value) {
        if (value.matches("^0*[0-9]+(\\.[0-9]+)*$") == false) {
            throw new IllegalArgumentException(value);
        }

        final List<Integer> version = new ArrayList<Integer>();
        final String[] components = value.split("\\.");
        for (final String component : components) {
            version.add(Integer.valueOf(component));
        }
        return new JavaVersion(version);
    }

    public static int majorVersion(final JavaVersion javaVersion) {
        Objects.requireNonNull(javaVersion);
        if (javaVersion.version.get(0) > 1) {
            return javaVersion.version.get(0);
        } else {
            return javaVersion.version.get(1);
        }
    }

    private static int compare(final JavaVersion leftVersion, final JavaVersion rightVersion) {
        List<Integer> left = leftVersion.version;
        List<Integer> right = rightVersion.version;
        // lexicographically compare two lists, treating missing entries as zeros
        final int len = Math.max(left.size(), right.size());
        for (int i = 0; i < len; i++) {
            final int l = (i < left.size()) ? left.get(i) : 0;
            final int r = (i < right.size()) ? right.get(i) : 0;
            if (l < r) {
                return -1;
            }
            if (r < l) {
                return 1;
            }
        }
        return 0;
    }

    @Override
    public int compareTo(JavaVersion other) {
        return compare(this, other);
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