super can be used to refer immediate parent class instance variable.

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

1796

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Program:

<span class="pln">
</span><span class="kwd">class</span><span class="pln"> </span><span class="typ">Parent</span><span class="pun">{</span><span class="pln">
</span><span class="kwd">int</span><span class="pln"> age</span><span class="pun">=</span><span class="lit">70</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">Child</span><span class="pln"> </span><span class="kwd">extends</span><span class="pln"> </span><span class="typ">Parent</span><span class="pun">{</span><span class="pln">
	</span><span class="kwd">int</span><span class="pln"> age</span><span class="pun">=</span><span class="lit">40</span><span class="pun">;</span><span class="pln">
	</span><span class="kwd">void</span><span class="pln"> printAge</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="pln">age</span><span class="pun">);</span><span class="com">//prints age of Child class</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="kwd">super</span><span class="pun">.</span><span class="pln">age</span><span class="pun">);</span><span class="com">//prints age of Parent class</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">SuperKeyword</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="typ">Child</span><span class="pln"> obj</span><span class="pun">=</span><span class="kwd">new</span><span class="pln"> </span><span class="typ">Child</span><span class="pun">();</span><span class="pln">
	obj</span><span class="pun">.</span><span class="pln">printAge</span><span class="pun">();</span><span class="pln">
	</span><span class="pun">}</span><span class="pln">
</span><span class="pun">}</span>

Output:

40
70
Press any key to continue . . .

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