Optional.java

package com.think.uiloader.data.cache.internal;

/**
 * Created by borney on 3/9/17.
 */

public final class Optional {

    public static <T> T checkNotNull(T ref) {
        return checkNotNull(ref, "ref is null!!!");
    }

    public static <T> T checkNotNull(T ref, String errorMsg) {
        if(ref == null) {
            throw new NullPointerException(errorMsg);
        }
        return ref;
    }
}