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20 lines
543 B
20 lines
543 B
import java.util.HashMap;
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import java.util.Map;
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public class Cache<K, V> {
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private final Map<K, V> cache;
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public Cache() {
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cache = new HashMap<>();
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}
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public synchronized void put(K key, V value) {
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cache.put(key, value);
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}
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public synchronized V get(K key) {
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return cache.get(key);
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}
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public synchronized boolean hasKey(K key) {
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return cache.containsKey(key);
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}
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public synchronized void remove(K key) {
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cache.remove(key);
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}
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}
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