// This will generate a nice output in the output directory.
File outFolder = new File("output");
if (outFolder.exists()) {
FileUtils.deleteDirectory(outFolder);
}
builder.addPlugin(new CrawlOverview(outFolder));
// We want to use two browsers simultaneously.
builder.setBrowserConfig(new BrowserConfiguration(BrowserType.firefox, 2));
CrawljaxRunner crawljax = new CrawljaxRunner(builder.build());