super.getClass().getName()

public class StringTest extends Date{
public static void main(String[] args) {
new StringTest().show();

}

private  void show(){
System.out.println(super.getClass().getName());

}

由以上代码组成的测试案例：

1、预计运行结果：Date

2、实际运行结果：StringTest

3、运行结果分析：

/**

     * Returns the runtime class of this {@code Object}. The returned
   * {@code Class} object is the object that is locked by {@code
   * static synchronized} methods of the represented class.
     *
   * <p><b>The actual result type is {@code Class<? extends |X|>}
   * where {@code |X|} is the erasure of the static type of the
   * expression on which {@code getClass} is called.</b> For
         * example, no cast is required in this code fragment:</p>
     *
   * <p>
  * {@code Number n = 0;                             }<br>
   * {@code Class<? extends Number> c = n.getClass(); }
   * </p>
     *
    * @return The {@code Class} object that represents the runtime
   *         class of this object.
   * @see    <a href="http://java.sun.com/docs/books/jls/">The Java
    *         Language Specification, Third Edition (15.8.2 Class
   *         Literals)</a>
   */
    public final native Class<?> getClass();

以上是Object类中getClass()方法及注释，由于getClass方法被定义为final,所以该方法不可继承（重写）。

由Object类的getClass()方法注释可知，getClass()方法返回的是运行时主调类的类名。