java ~

import java.lang.ref.WeakReference;

public class MemoryLeakExample {
    private WeakReference<LargeObject> largeObjectRef;

    public void setLargeObject(LargeObject largeObject) {
        this.largeObjectRef = new WeakReference<>(largeObject);
    }
}

public class ThreadSafeCounter {
    private int count = 0;

    public synchronized void increment() {
        count++;
    }

    public synchronized int getCount() {
        return count;
    }
}

public class PerformanceOptimization {
    private static final ObjectPool<MyObject> pool = new GenericObjectPool<>(new MyObjectFactory());

    public void process() throws Exception {
        MyObject obj = pool.borrowObject();
        try {
            // 使用对象
        } finally {
            pool.returnObject(obj);
        }
    }
}