add Template Pattern

Author: dslsyeoh

src/com/dsl/design/pattern/template/BasicDesktop.java

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+/*
+ * Author Steven Yeoh
+ * Copyright (c) 2019. All rights reserved.
+ */
+
+package com.dsl.design.pattern.template;
+
+public class BasicDesktop extends DesktopTemplate
+{
+    @Override
+    public boolean addExtraRam()
+    {
+        return false;
+    }
+
+    @Override
+    public boolean addGraphicCard()
+    {
+        return false;
+    }
+
+    @Override
+    public boolean addSSD()
+    {
+        return false;
+    }
+
+    @Override
+    public boolean addExtraCooler()
+    {
+        return false;
+    }
+}

src/com/dsl/design/pattern/template/DesktopTemplate.java

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+/*
+ * Author Steven Yeoh
+ * Copyright (c) 2019. All rights reserved.
+ */
+
+package com.dsl.design.pattern.template;
+
+public abstract class DesktopTemplate
+{
+    public void addCasing()
+    {
+        System.out.println("Added Basic Casing");
+    }
+
+    public void addMother()
+    {
+        System.out.println("Added Motherboard");
+    }
+
+    public void addCPU()
+    {
+        System.out.println("Added CPU");
+    }
+
+    public void addHDD()
+    {
+        System.out.println("Added HDD");
+    }
+
+    public void addCooler()
+    {
+        System.out.println("Added Cooler");
+    }
+
+    public void addRam()
+    {
+        System.out.println("Added Ram");
+    }
+
+    public abstract boolean addExtraRam();
+    public abstract boolean addGraphicCard();
+    public abstract boolean addSSD();
+    public abstract boolean addExtraCooler();
+
+    public void build()
+    {
+        addCasing();
+        addMother();
+        addCPU();
+        addHDD();
+        addCooler();
+        addRam();
+
+        if(addExtraRam())
+        {
+            System.out.println("Added Extra RAM");
+        }
+        if(addGraphicCard())
+        {
+            System.out.println("Added Graphic Card");
+        }
+        else
+        {
+            System.out.println("No Graphic Card");
+        }
+        if (addSSD())
+        {
+            System.out.println("Added SSD");
+        }
+        if (addExtraCooler())
+        {
+            System.out.println("Added extra cooler");
+        }
+    }
+}

src/com/dsl/design/pattern/template/HighEndDesktop.java

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+/*
+ * Author Steven Yeoh
+ * Copyright (c) 2019. All rights reserved.
+ */
+
+package com.dsl.design.pattern.template;
+
+public class HighEndDesktop extends DesktopTemplate
+{
+    @Override
+    public boolean addExtraRam()
+    {
+        return true;
+    }
+
+    @Override
+    public boolean addGraphicCard()
+    {
+        return true;
+    }
+
+    @Override
+    public boolean addSSD()
+    {
+        return true;
+    }
+
+    @Override
+    public boolean addExtraCooler()
+    {
+        return true;
+    }
+
+    @Override
+    public void addCasing()
+    {
+        System.out.println("Add Gaming Casing");
+    }
+}

src/com/dsl/design/pattern/template/MediocreDesktop.java

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+/*
+ * Author Steven Yeoh
+ * Copyright (c) 2019. All rights reserved.
+ */
+
+package com.dsl.design.pattern.template;
+
+public class MediocreDesktop extends DesktopTemplate
+{
+    @Override
+    public boolean addExtraRam()
+    {
+        return true;
+    }
+
+    @Override
+    public boolean addGraphicCard()
+    {
+        return true;
+    }
+
+    @Override
+    public boolean addSSD()
+    {
+        return false;
+    }
+
+    @Override
+    public boolean addExtraCooler()
+    {
+        return false;
+    }
+}

src/com/dsl/design/pattern/template/TemplatePatternDemo.java

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+/*
+ * Author Steven Yeoh
+ * Copyright (c) 2019. All rights reserved.
+ */
+
+package com.dsl.design.pattern.template;
+
+public class TemplatePatternDemo
+{
+    public static void main(String[] args)
+    {
+        BasicDesktop basicDesktop = new BasicDesktop();
+        System.out.println("============= BASIC DESKTOP =============");
+        basicDesktop.build();
+        System.out.println("============= BASIC DESKTOP =============");
+
+        System.out.println("\n============= MEDIOCRE DESKTOP =============");
+        MediocreDesktop mediocreDesktop = new MediocreDesktop();
+        mediocreDesktop.build();
+        System.out.println("============= MEDIOCRE DESKTOP =============");
+
+        System.out.println("\n============= HIGH END DESKTOP =============");
+        HighEndDesktop highEndDesktop = new HighEndDesktop();
+        highEndDesktop.build();
+        System.out.println("============= HIGH END DESKTOP =============");
+    }
+}