如何在Java中实现不同对象的等键值同步

import java.util.concurrent.ConcurrentHashMap;

public class SyncMap {
    private ConcurrentHashMap<String, Object> map;

    public SyncMap() {
        map = new ConcurrentHashMap<>();
    }

    public void put(String key, Object value) {
        map.put(key, value);
    }

    public Object get(String key) {
        return map.get(key);
    }

    public void remove(String key) {
        map.remove(key);
    }
}

public class Main {
    public static void main(String[] args) {
        SyncMap syncMap = new SyncMap();

        // 线程1向map中放入键值对
        new Thread(() -> {
            syncMap.put("key1", "value1");
        }).start();

        // 线程2从map中获取键值对
        new Thread(() -> {
            Object value = syncMap.get("key1");
            System.out.println("Value: " + value);
        }).start();
    }
}