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Stripecube is an open source Java framework for Web Applications

There is a newer version: 1.30

package com.clickntap.tool.cache;

import java.io.Serializable;

public class MemoryCache implements Cache {

    private MemoryLruMap memory;

    public MemoryCache() {
        memory = new MemoryLruMap(999999);
    }

    public Serializable get(Serializable key) throws Exception {
        synchronized (memory) {
            return memory.get(key);
        }
    }

    public Serializable put(Serializable key, Serializable value) throws Exception {
        if (contains(key))
            return value;
        synchronized (memory) {
            return memory.put(key, value);
        }
    }

    public void remove(Serializable key) throws Exception {
        synchronized (memory) {
            memory.remove(key);
        }
    }

    public void removeAll() throws Exception {
        synchronized (memory) {
            memory.clear();
        }
    }

    public boolean contains(Serializable key) throws Exception {
        synchronized (memory) {
            return memory.containsKey(key);
        }
    }

}