Question paper Solution Syllabus Pre- board Paper SYLLABUS YEAR2014-2025 Syllabus Here Course Objectives This module aims to provide the students with the basic foundation on concepts of searching and knowledge epresentation in AI systems. The key objective is to make students more pragmatic in knowledge of AI by giving its applications like designing and training […]
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public interface Shape { void draw(); } |
Create an interface. Shape.java Step 2 Create concrete classes implementing the same interface. Rectangle.java
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<span class="kwd">public</span> <span class="kwd">class</span> <span class="typ">Rectangle</span> <span class="kwd">implements</span> <span class="typ">Shape</span> <span class="pun">{</span> <span class="lit">@Override</span> <span class="kwd">public</span> <span class="kwd">void</span><span class="pln"> draw</span><span class="pun">()</span> <span class="pun">{</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">"Inside Rectangle::draw() method."</span><span class="pun">);</span> <span class="pun">}</span> <span class="pun">}</span> |
Square.java
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<span class="kwd">public</span> <span class="kwd">class</span> <span class="typ">Square</span> <span class="kwd">implements</span> <span class="typ">Shape</span> <span class="pun">{</span> <span class="lit">@Override</span> <span class="kwd">public</span> <span class="kwd">void</span><span class="pln"> draw</span><span class="pun">()</span> <span class="pun">{</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">"Inside Square::draw() method."</span><span class="pun">);</span> <span class="pun">}</span> <span class="pun">}</span> |
Circle.java
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<span class="kwd">public</span> <span class="kwd">class</span> <span class="typ">Circle</span> <span class="kwd">implements</span> <span class="typ">Shape</span> <span class="pun">{</span> <span class="lit">@Override</span> <span class="kwd">public</span> <span class="kwd">void</span><span class="pln"> draw</span><span class="pun">()</span> <span class="pun">{</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">"Inside Circle::draw() method."</span><span class="pun">);</span> <span class="pun">}</span> <span class="pun">}</span> |
Step 3 Create a Factory to generate object of concrete class based on given information. ShapeFactory.java
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<span class="kwd">public</span> <span class="kwd">class</span> <span class="typ">ShapeFactory</span> <span class="pun">{</span> <span class="com">//use getShape method to get object of type shape </span> <span class="kwd">public</span> <span class="typ">Shape</span><span class="pln"> getShape</span><span class="pun">(</span><span class="typ">String</span><span class="pln"> shapeType</span><span class="pun">){</span> <span class="kwd">if</span><span class="pun">(</span><span class="pln">shapeType </span><span class="pun">==</span> <span class="kwd">null</span><span class="pun">){</span> <span class="kwd">return</span> <span class="kwd">null</span><span class="pun">;</span> <span class="pun">}</span> <span class="kwd">if</span><span class="pun">(</span><span class="pln">shapeType</span><span class="pun">.</span><span class="pln">equalsIgnoreCase</span><span class="pun">(</span><span class="str">"CIRCLE"</span><span class="pun">)){</span> <span class="kwd">return</span> <span class="kwd">new</span> <span class="typ">Circle</span><span class="pun">();</span> <span class="pun">}</span> <span class="kwd">else</span> <span class="kwd">if</span><span class="pun">(</span><span class="pln">shapeType</span><span class="pun">.</span><span class="pln">equalsIgnoreCase</span><span class="pun">(</span><span class="str">"RECTANGLE"</span><span class="pun">)){</span> <span class="kwd">return</span> <span class="kwd">new</span> <span class="typ">Rectangle</span><span class="pun">();</span> <span class="pun">}</span> <span class="kwd">else</span> <span class="kwd">if</span><span class="pun">(</span><span class="pln">shapeType</span><span class="pun">.</span><span class="pln">equalsIgnoreCase</span><span class="pun">(</span><span class="str">"SQUARE"</span><span class="pun">)){</span> <span class="kwd">return</span> <span class="kwd">new</span> <span class="typ">Square</span><span class="pun">();</span> <span class="pun">}</span> <span class="kwd">return</span> <span class="kwd">null</span><span class="pun">;</span> <span class="pun">}</span> <span class="pun">}</span> |
Step 4 Use the Factory to get object of concrete class by […]
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