如何有效使用ListIterator？

Question

I have a method like the following -:

public void apply(ArrayList<String> tokenStream);

in which I accept a list of string tokens like the following - tokenStream = ("I am good" , "I am bad") , and I want to be able to convert these tokens in the tokenStream list into individual tokens and add them back to the same list in the manner that after the method execution is over I should have - tokenStream = ("I" , "am" ,"good" , "I" , "am" , "bad"), How can I use ListIterator to solve this problem? Basically I want to be able to split the individual strings in the tokenStream and add them back to the same stream object using ListIterators set and remove methods, how do I do it?

This is specifically what I am trying to do

public void apply(tokenstream stream){

        if (stream != null) {

            ArrayList<String> splittedTokens = new ArrayList<>();

            while (stream.hasNext()) {

                String token = stream.next();

                String[] splitTokens = token.split("\\s+");

                for (int i = 0; i < splitTokens.length; ++i)
                    splittedTokens.add(splitTokens[i]);
            }

            // set the stream to hold this new formed stream with tokens
            stream.set((String[]) splittedTokens.toArray());
        }
    }

I am trying to remove the whitespace from the tokens in the token stream object which internally uses an array list to store the tokens and this tokenstream class has a set of methods complementing those of the ListIterator class like set and remove, so how do I go about implementing that?

Answer 1

对于此任务，最好的方法似乎是创建一个临时列表，迭代tokenStream拆分令牌并将其添加到临时列表中，然后从temp中清除tokenStream和addAll