Java + vs. StringBuilder

    public static void main(String[] args) {
        int iterations = 10000;

        long start = System.currentTimeMillis();
        String text = "";
        for (int count = 0; count < iterations; count++) {
            text += "Test" + "\n";
        }
        System.out.println("+ took: " + Long.toString(System.currentTimeMillis() - start) + "ms");

        start = System.currentTimeMillis();
        StringBuilder builder = new StringBuilder();
        for (int count = 0; count < iterations; count++) {
            builder.append("Test").append("\n");
        }
        System.out.println("StringBuilder took: " + Long.toString(System.currentTimeMillis() - start) + "ms");
    }