COMPUTER SCIENCE AND ENGINEERING
DATA STRUCTURES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How do you iterate through a HashMap using a for each loop?
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for each (String key:map.keySet()) {}
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for each (String key:map) {}
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for (String key:map) {}
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for (String key:map.keySet()) {}
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Explanation:
Detailed explanation-1: -Using keyset() and value() method keyset(): A keySet() method of HashMap class is used for iteration over the keys contained in the map. It returns the Set view of the keys. values(): A values() method of HashMap class is used for iteration over the values contained in the map.
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