import java.util.ArrayList; import java.util.List; public class Test { private List<String> list; public Test(){ list = new ArrayList<String>(); } public void add(String text){ list.add(text); } /** * @param args */ public static void main(String[] args) { System.out.println("== Start =="); new Test(){{add("foo");}}; System.out.println("== end =="); } }