Copy of a Constructor, By constructor and object

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

978

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Program:

<span class="pln"> </span><span class="kwd">class</span><span class="pln"> </span><span class="typ">Studentcopy</span><span class="pun">{</span><span class="pln">
    </span><span class="kwd">int</span><span class="pln"> rollno</span><span class="pun">;</span><span class="pln">
    </span><span class="typ">String</span><span class="pln"> name</span><span class="pun">;</span><span class="pln">

    </span><span class="typ">Studentcopy</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> i</span><span class="pun">,</span><span class="typ">String</span><span class="pln"> n</span><span class="pun">){</span><span class="pln">
    rollno </span><span class="pun">=</span><span class="pln"> i</span><span class="pun">;</span><span class="pln">
    name </span><span class="pun">=</span><span class="pln"> n</span><span class="pun">;</span><span class="pln">
    </span><span class="pun">}</span><span class="pln">

    </span><span class="typ">Studentcopy</span><span class="pun">(</span><span class="typ">Studentcopy</span><span class="pln"> obj</span><span class="pun">){</span><span class="pln">
    rollno </span><span class="pun">=</span><span class="pln"> obj</span><span class="pun">.</span><span class="pln">rollno</span><span class="pun">;</span><span class="pln">
    name </span><span class="pun">=</span><span class="pln">obj</span><span class="pun">.</span><span class="pln">name</span><span class="pun">;</span><span class="pln">
    </span><span class="pun">}</span><span class="pln">

    </span><span class="kwd">void</span><span class="pln"> display</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">rollno</span><span class="pun">+</span><span class="str">" "</span><span class="pun">+</span><span class="pln">name</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">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">Studentcopy</span><span class="pln"> s1 </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">Studentcopy</span><span class="pun">(</span><span class="lit">1</span><span class="pun">,</span><span class="str">"Rahim"</span><span class="pun">);</span><span class="pln">
    </span><span class="typ">Studentcopy</span><span class="pln"> s2 </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">Studentcopy</span><span class="pun">(</span><span class="pln">s1</span><span class="pun">);</span><span class="pln">
    s1</span><span class="pun">.</span><span class="pln">display</span><span class="pun">();</span><span class="pln">
    s2</span><span class="pun">.</span><span class="pln">display</span><span class="pun">();</span><span class="pln">
   </span><span class="pun">}</span><span class="pln">
</span><span class="pun">}</span>

Output:

1 Rahim
1 Rahim
Press any key to continue . . .

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