Question

Is there a way to search for certain name and display it for arraylist? (like getting a key from hashmap)

The list format is

Name: score -age

{A: 100 - 15, A: 200 - 16, B: 75 -11}

and what I want to do is, getting only A’s data and displaying it.

List<Score> scores = new ArrayList<>();
scores.add(new Score("A", 100, 15));
scores.add(new Score("A", 200, 16));
scores.add(new Score("B", 75, 11));

Answer 1

I think for ArrayList you need to traverse your list and find respective score element and show it.

List<Score> scores = new ArrayList<>();    
for(Score score : scores) {
    if (score.getName().equals("A")) {
       ...
    }
}