The tests on java.util.EnumMap use the following code pattern:
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    Object [] array = {
        Suit.CLUBS, null,
        Suit.DIAMONDS, "val1",
        Suit.HEARTS, "val2",
        Suit.SPADES, new Integer(1)
    };
    ...
    EnumMap map = new EnumMap(Suit.class);
    ...
    for (int j = 0; j < i; j += 2) {
        map.put(array[j], array[j + 1]); // *
    }
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The line marked (*) cause compilation error since JDK7 b55 with the output:
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minitest.java:15: cannot find symbol
        map.put(array[0], array[1]);
           ^
  symbol: method put(java.lang.Object,java.lang.Object)
  location: class java.util.EnumMap
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