Which of the following Java programs will result in a runtime error, and why?

<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">RuntimeErrorExample</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="pun">[]</span><span class="pln"> args</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
        </span><span class="kwd">int</span><span class="pln"> a </span><span class="pun">=</span><span class="pln"> </span><span class="lit">10</span><span class="pun">;</span><span class="pln">
        </span><span class="kwd">int</span><span class="pln"> b </span><span class="pun">=</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln">
        </span><span class="kwd">int</span><span class="pln"> result </span><span class="pun">=</span><span class="pln"> a </span><span class="pun">/</span><span class="pln"> b</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">"Result: "</span><span class="pln"> </span><span class="pun">+</span><span class="pln"> result</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>

This program will compile successfully but will crash at runtime due to division by zero (10 / 0), causing an ArithmeticException.

Fixed Code (Using Exception Handling):

<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">RuntimeErrorExample</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="pun">[]</span><span class="pln"> args</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
        </span><span class="kwd">int</span><span class="pln"> a </span><span class="pun">=</span><span class="pln"> </span><span class="lit">10</span><span class="pun">;</span><span class="pln">
        </span><span class="kwd">int</span><span class="pln"> b </span><span class="pun">=</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln">
        </span><span class="kwd">try</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
            </span><span class="kwd">int</span><span class="pln"> result </span><span class="pun">=</span><span class="pln"> a </span><span class="pun">/</span><span class="pln"> b</span><span class="pun">;</span><span class="pln"> </span><span class="com">// Risky operation</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">"Result: "</span><span class="pln"> </span><span class="pun">+</span><span class="pln"> result</span><span class="pun">);</span><span class="pln">
        </span><span class="pun">}</span><span class="pln"> </span><span class="kwd">catch</span><span class="pln"> </span><span class="pun">(</span><span class="typ">ArithmeticException</span><span class="pln"> e</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">"Error: Division by zero is not allowed."</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="pun">}</span><span class="pln">
</span>

This ensures that the program handles the error gracefully instead of crashing. 🚀