java源码中一个抽象类初始化方法中包含一个super(),该怎么理解

import java.util.Set;
/**
 * Abstract base class for parameter collections.
 * Type specific setters and getters are mapped to the abstract,
 * generic getters and setters.
 *
 * @since 4.0
 *
 * @deprecated (4.3) use configuration classes provided 'org.apache.http.config'
 *  and 'org.apache.http.client.config'
 */
@Deprecated
public abstract class AbstractHttpParams implements HttpParams, HttpParamsNames {
    /**
     * Instantiates parameters.
     */
    protected AbstractHttpParams() {
        super();
    }
    @Override
    public long getLongParameter(final String name, final long defaultValue) {
        final Object param = getParameter(name);
        if (param == null) {
            return defaultValue;
        }
        return ((Long) param).longValue();
    }