super keyword can be used to invoke parent class method: Example: Animal class

Java Programming Language Class, Object and Methods in java (Article) Class, Object and Methods in java (Program)

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Program:

<span class="pln"> </span><span class="kwd">class</span><span class="pln"> </span><span class="typ">Animal</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
   </span><span class="kwd">public</span><span class="pln"> </span><span class="kwd">void</span><span class="pln"> eat</span><span class="pun">()</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
      </span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="pln">println</span><span class="pun">(</span><span class="str">"Animals eat.."</span><span class="pun">);</span><span class="pln">
   </span><span class="pun">}</span><span class="pln">
</span><span class="pun">}</span><span class="pln">

</span><span class="kwd">class</span><span class="pln"> </span><span class="typ">Dog</span><span class="pln"> </span><span class="kwd">extends</span><span class="pln"> </span><span class="typ">Animal</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
   </span><span class="kwd">public</span><span class="pln"> </span><span class="kwd">void</span><span class="pln"> eat</span><span class="pun">()</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
      </span><span class="kwd">super</span><span class="pun">.</span><span class="pln">eat</span><span class="pun">();</span><span class="pln">   </span><span class="com">// invokes the super class method</span><span class="pln">
      </span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="pln">println</span><span class="pun">(</span><span class="str">"Dogs eat meet"</span><span class="pun">);</span><span class="pln">
   </span><span class="pun">}</span><span class="pln">
</span><span class="pun">}</span><span class="pln">

</span><span class="kwd">public</span><span class="pln"> </span><span class="kwd">class</span><span class="pln"> </span><span class="typ">SuperKeyword</span><span class="pln"> </span><span class="pun">{</span><span class="pln">

   </span><span class="kwd">public</span><span class="pln"> </span><span class="kwd">static</span><span class="pln"> </span><span class="kwd">void</span><span class="pln"> main</span><span class="pun">(</span><span class="typ">String</span><span class="pln"> args</span><span class="pun">[])</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
      </span><span class="typ">Animal</span><span class="pln"> ob </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">Dog</span><span class="pun">();</span><span class="pln">   </span><span class="com">// Animal reference but Dog object</span><span class="pln">
      ob</span><span class="pun">.</span><span class="pln">eat</span><span class="pun">();</span><span class="pln">   </span><span class="com">// runs the method in Dog class</span><span class="pln">
   </span><span class="pun">}</span><span class="pln">
</span><span class="pun">}</span>

Output:

Animals eat..
Dogs eat meet
Press any key to continue . . .

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