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darrenbkl/block7.java Secret

Created January 22, 2020 11:31
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block7.java
public static void addNumberToList(List<? super Number> numList, Number number) {
numList.add(number);
}
List<Number> numList = new ArrayList<>();
addNumberToList(numList, 1);
addNumberToList(numList, 2.2);
addNumberToList(numList, 3.33f);
printList(numList); // 1, 2.2, 3.3
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