src.samples.java.ex.CCI_Sample Maven / Gradle / Ivy

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package ex;

import java.util.Collections;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

public class CCI_Sample {

    private Map> map = new ConcurrentHashMap<>();

    public void update(String key, String value) {

        Set values = map.get(key);

        if (values == null) {
            values = Collections.newSetFromMap(new ConcurrentHashMap());
            map.put(key, values);
        }

        values.add(value);
    }
}