HashMap遍历

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Map<Integer, Integer> map = new HashMap<Integer, Integer>();

//iterating over keys only
for (Integer key : map.keySet()) {
    System.out.println("Key = " + key);
}

//iterating over values only
for (Integer value : map.values()) {
    System.out.println("Value = " + value);
}

HashMap遍历

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原文地址：http://www.cnblogs.com/fblijava/p/5873032.html