System.out.println(forEach(peopleLst, People.class));

Problem: Exception in thread "main" java.lang.ClassCastException: $Proxy15 cannot be cast to java.lang.String at model.People$$EnhancerByCGLIB$$2109c29.toString(<generated>) at java.lang.String.valueOf(String.java:2826) at java.io.PrintStream.println(PrintStream.java:771) at logic.Insert.load(Insert.java:145) at TestApps.main(TestApps.java:19)

This is not a valid lambdaj statement. What did you want to achieve with this? What was your expected result?