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 
  31 import java.util.List;
  32 import java.util.ArrayList;
  33 
  34 public class ListOfListTest {
  35 
  36     public static void main(String[] argv) {
  37         List<List<Integer>> ll = new ArrayList<List<Integer>>();
  38         List<Integer> il = new ArrayList<Integer>();
  39         ll.add(il);
  40         il.add(1);
  41         int sum = 0;
  42         for (Integer i : ll.get(0)) {
  43             sum = identity(sum) + i;
  44         }
  45 
  46         if (sum != 1) throw new Error(""+sum);
  47 
  48         enumsToo();
  49     }
  50 
  51     static int identity(Integer i) {
  52         switch (i) {
  53         case 0: return 0;
  54         default: return i;
  55         }
  56     }
  57 
  58     enum E { a, b, c, d, e };
  59 
  60     static class Box<T> {
  61         Box(T t) { this.t = t; }
  62         T t;
  63         T get() { return t; }
  64     }
  65 
  66     static void enumsToo() {
  67         Box<E> box = new Box<E>(E.c);
  68         switch (box.get()) {
  69         case a: throw new Error();
  70         case c: break;
  71         default: throw new Error();
  72         }
  73         Box<Integer> boxi = new Box<Integer>(12);
  74         switch (boxi.get()) {
  75         case 0: throw new Error();
  76         case 12: break;
  77         default: throw new Error();
  78         }
  79     }
  80 }