Combining Collections

# Map + List combining collections

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

public class cc

{

public static void main(String[] args)

{

Map<String, List<Integer>> testScores = new HashMap<>();

List<Integer> mikeScores = new ArrayList<>();

mikeScores.add(80);

mikeScores.add(60);

mikeScores.add(50);

testScores.put("mike", mikeScores);

printScores("mike", testScores);

}

public static void printScores(String studentName, Map<String, List<Integer>> scoreMap)

{

List<Integer> scores = scoreMap.get(studentName);

for (int score : scores)

{

System.out.println(score);

}

}

}

# 결과

80

60

50