1 /*
   2  * Copyright 2003 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4915435
  27  * @summary NullPointerError in Resolve.findMethod() with foreach vs generics
  28  * @author gafter
  29  *
  30  * @compile -source 1.5 ListOfListTest.java
  31  * @run main ListOfListTest
  32  */
  33 
  34 import java.util.List;
  35 import java.util.ArrayList;
  36 
  37 public class ListOfListTest {
  38 
  39     public static void main(String[] argv) {
  40         List<List<Integer>> ll = new ArrayList<List<Integer>>();
  41         List<Integer> il = new ArrayList<Integer>();
  42         ll.add(il);
  43         il.add(1);
  44         int sum = 0;
  45         for (Integer i : ll.get(0)) {
  46             sum = identity(sum) + i;
  47         }
  48 
  49         if (sum != 1) throw new Error(""+sum);
  50 
  51         enumsToo();
  52     }
  53 
  54     static int identity(Integer i) {
  55         switch (i) {
  56         case 0: return 0;
  57         default: return i;
  58         }
  59     }
  60 
  61     enum E { a, b, c, d, e };
  62 
  63     static class Box<T> {
  64         Box(T t) { this.t = t; }
  65         T t;
  66         T get() { return t; }
  67     }
  68 
  69     static void enumsToo() {
  70         Box<E> box = new Box<E>(E.c);
  71         switch (box.get()) {
  72         case a: throw new Error();
  73         case c: break;
  74         default: throw new Error();
  75         }
  76         Box<Integer> boxi = new Box<Integer>(12);
  77         switch (boxi.get()) {
  78         case 0: throw new Error();
  79         case 12: break;
  80         default: throw new Error();
  81         }
  82     }
  83 }