I want to pass all the values from a HashMap to ArrayList (that a demand of my exercise..) and to use for it an iterator (to the HashMap).
How do I get the first key to the HashMap?
(if I have the first I'll continue in a loop untill there is no "hasNext ()" to the iterator..)
anilopo 0
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Jump to PostI want to pass all the values from a HashMap to ArrayList
HashMap has a values() method that returns a Collection of all the values.
ArrayList has a constructor that takes a Collection of values to populate the list. So all you need is a single line of code.
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JamesCherrill 4,733
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I want to pass all the values from a HashMap to ArrayList
HashMap has a values() method that returns a Collection of all the values.
ArrayList has a constructor that takes a Collection of values to populate the list. So all you need is a single line of code.
anilopo
commented:
thx! +2
anilopo 0
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HashMap has a values() method that returns a Collection of all the values.
ArrayList has a constructor that takes a Collection of values to populate the list. So all you need is a single line of code.
I worked it out with an iterator.
but maybe I'll change it eventually..
thx!
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