https://sohel-khan.netlify.app/tag/oop/oopWowchemy (https://wowchemy.com)en-usWed, 05 Oct 2022 00:00:00 +0000https://sohel-khan.netlify.app/media/icon_hu0bd4c7ae0cff8c19f1aa2afc18bab549_2615_512x512_fill_lanczos_center_3.pnghttps://sohel-khan.netlify.app/tag/oop/https://sohel-khan.netlify.app/post/java/Wed, 05 Oct 2022 00:00:00 +0000https://sohel-khan.netlify.app/post/java/<h1 id="what-is-java">What is Java?</h1> <p>Java is one of the most popular languages in programming world. James Gosling developed Java in 1995. It&rsquo;s previous names are Greentalk, Oak etc.</p> <ul> <li>Object oriented language</li> <li>Class-based language</li> <li>Concurrent language</li> <li>Secured language</li> <li>General purpose language</li> <li>High level language</li> <li>Robust language</li> <li>Dynamic language</li> <li>Software platform</li> </ul> <h1 id="application">Application</h1> <ul> <li>Computer Applications</li> <li>Web Applications</li> <li>Enterprise Applications</li> <li>Mobile Applicationa</li> <li>Games</li> <li>Robotics</li> <li>Smart Card</li> <li>Embedded System</li> </ul> <h1 id="java-platforms">Java Platforms</h1> <ul> <li>Java standard Edition</li> <li>Java Enterprise Edition</li> <li>Java Micro Edition</li> <li>JavaFX</li> </ul> <h1 id="java-virtual-machine-jvm">Java Virtual Machine (JVM)</h1> <p>JVM provides a runtime environment in which Java bytecode can be excuted.</p> <h1 id="java-runtime-environment-jre">Java Runtime Environment (JRE)</h1> <p>JRE is implement of JVM. It contains a set of libraries and other files which uses at runtime.</p> <h1 id="java-development-kit-jdk">Java Development Kit (JDK)</h1> <p>JDK is sofware development environment which is used to develop java applets and apps. It contains JRE and other development tools.</p> <h1 id="java-hello_world-code">Java Hello_world code</h1> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-java" data-lang="java"><span class="line"><span class="cl"><span class="err">\\</span> <span class="n">my</span> <span class="n">first</span> <span class="n">java</span> <span class="n">program</span> </span></span><span class="line"><span class="cl"><span class="kd">public</span> <span class="kd">class</span> <span class="nc">Hello_World</span><span class="o">{</span> </span></span><span class="line"><span class="cl"> <span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">main</span><span class="o">(</span><span class="n">String</span><span class="o">[]</span> <span class="n">args</span><span class="o">){</span> </span></span><span class="line"><span class="cl"> <span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">&#34;Hello World!&#34;</span><span class="o">);</span> </span></span><span class="line"><span class="cl"> <span class="o">}</span> </span></span><span class="line"><span class="cl"><span class="o">}</span> </span></span></code></pre></div> <div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;"> <iframe type="text/html" src="https://www.jdoodle.com/embed/v0/5gfN" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" allowfullscreen ></iframe> </div> <script src=”https://www.jdoodle.com/assets/jdoodle-pym.min.js” type=”text/javascript”></script>