Best way to get value from Collection by index

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旧时难觅i
旧时难觅i 2020-12-05 17:08

What is the best way to get value from java.util.Collection by index?

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  •  时光取名叫无心
    2020-12-05 17:34

    use for each loop...

    ArrayList al = new ArrayList<>();    
    String input="hello";
    
    for (int i = 0; i < input.length(); i++){
        al.add(input.charAt(i));
    }
    
    for (Character ch : al) {               
        System.Out.println(ch);             
    }
    

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