A Liferay Groovy script that lists the contents of a file

listFile.groovy

try {
	java.io.File file = new java.io.File("/opt/liferay/portal-ext.properties");
	String s = com.liferay.portal.kernel.util.FileUtil.read(file);
	out.println(s);
} catch (Exception e) {
	out.println(e.getMessage());
}