software design pattern codes

rafiulgits · rafiulgits · commit d62b1a61d973 · 2019-02-18T17:55:16.000+06:00
abstract factory, factory pattern, singleton pattern
diff --git a/design-pattern/factory/AndroidButton.java b/design-pattern/factory/AndroidButton.java
@@ -0,0 +1,28 @@
+package sdp.factory;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class AndroidButton implements Button{
+    
+    @Override
+    public void onClick(){
+        System.out.println("clicked on android");
+    }
+    
+    @Override
+    public Button getButton(){
+        return this;
+    }
+    
+    @Override
+    public String toString(){
+        return "Android button";
+    }
+    
+    public void androMethod(){
+        System.out.println("based on linux");
+    }
+}
+
diff --git a/design-pattern/factory/Button.java b/design-pattern/factory/Button.java
@@ -0,0 +1,10 @@
+package sdp.factory;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public interface Button {
+    public void onClick();
+    public Button getButton();
+}
diff --git a/design-pattern/factory/ButtonManager.java b/design-pattern/factory/ButtonManager.java
@@ -0,0 +1,18 @@
+package sdp.factory;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class ButtonManager {
+    public static final int BUTTON_ANDROID = 1;
+    public static final int BUTTON_IOS = 2;
+    
+    public static Button build(int type){
+        switch(type){
+            case BUTTON_ANDROID: return new AndroidButton();
+            case BUTTON_IOS: return new IOSButton();
+            default: return null;
+        }
+    }
+}
diff --git a/design-pattern/factory/IOSButton.java b/design-pattern/factory/IOSButton.java
@@ -0,0 +1,23 @@
+package sdp.factory;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class IOSButton implements Button{
+    
+    @Override
+    public void onClick(){
+        System.out.println("clicked on ios");
+    }
+    
+    @Override
+    public Button getButton(){
+        return this;
+    }
+    
+    @Override
+    public String toString(){
+        return "IOS Button";
+    }
+}
diff --git a/design-pattern/factory/Main.java b/design-pattern/factory/Main.java
@@ -0,0 +1,20 @@
+package sdp.factory;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class Main {
+    
+    public static void main(String[] args) {
+        
+        Button bt1 = ButtonManager.build(ButtonManager.BUTTON_ANDROID);
+        Button bt2 = ButtonManager.build(ButtonManager.BUTTON_IOS);
+        
+        System.out.println(bt1);
+        System.out.println(bt2);
+        
+        bt1.onClick();
+        bt2.onClick();
+    }
+}
diff --git a/design-pattern/factory/abstracts/Car.java b/design-pattern/factory/abstracts/Car.java
@@ -0,0 +1,10 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public interface Car {
+    public int seat();
+    public int horsePower();
+}
diff --git a/design-pattern/factory/abstracts/Factory.java b/design-pattern/factory/abstracts/Factory.java
@@ -0,0 +1,9 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public interface Factory {
+    public Car build();
+}
diff --git a/design-pattern/factory/abstracts/Main.java b/design-pattern/factory/abstracts/Main.java
@@ -0,0 +1,15 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class Main {
+    public static void main(String[] args) {
+        Car alion = Toyota.getCar(Toyota.SEDAN);
+        Car prado = Toyota.getCar(Toyota.SUV);
+        
+        System.out.println("Alion has "+alion.seat()+" seat");
+        System.out.println("Prado has "+prado.seat()+" seat");
+    }
+}
diff --git a/design-pattern/factory/abstracts/SUVCar.java b/design-pattern/factory/abstracts/SUVCar.java
@@ -0,0 +1,18 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class SUVCar implements Car{
+    
+    @Override
+    public int seat(){
+        return 6;
+    }
+    
+    @Override
+    public int horsePower(){
+        return 1000;
+    }
+}
diff --git a/design-pattern/factory/abstracts/SUVFactory.java b/design-pattern/factory/abstracts/SUVFactory.java
@@ -0,0 +1,13 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class SUVFactory implements Factory{
+    
+    @Override
+    public Car build(){
+        return new SUVCar();
+    }
+}
diff --git a/design-pattern/factory/abstracts/SedanCar.java b/design-pattern/factory/abstracts/SedanCar.java
@@ -0,0 +1,18 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class SedanCar implements Car{
+    @Override
+    public int seat(){
+        return 4;
+    }
+    
+    @Override
+    public int horsePower(){
+        return 700;
+    }
+    
+}
diff --git a/design-pattern/factory/abstracts/SedanFactory.java b/design-pattern/factory/abstracts/SedanFactory.java
@@ -0,0 +1,13 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class SedanFactory implements Factory{
+    
+    @Override
+    public Car build(){
+        return new SedanCar();
+    }
+}
diff --git a/design-pattern/factory/abstracts/Toyota.java b/design-pattern/factory/abstracts/Toyota.java
@@ -0,0 +1,17 @@
+package sdp.factory.abstracts;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class Toyota {
+    public static final int SUV = 1;
+    public static final int SEDAN = 2;
+    public static Car getCar(int type){
+        switch(type){
+            case SUV: return new SUVCar();
+            case SEDAN: return new SedanCar();
+            default: return null;
+        }
+    }
+}
diff --git a/design-pattern/singleton/DateTime.java b/design-pattern/singleton/DateTime.java
@@ -0,0 +1,20 @@
+package sdp.singleton;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class DateTime {
+    
+    private static DateTime obj = new DateTime();
+   
+    private DateTime(){}
+    
+    public static DateTime init(){
+        return obj;
+    }
+    
+    public long now(){
+        return System.currentTimeMillis();
+    }
+}
diff --git a/design-pattern/singleton/Main.java b/design-pattern/singleton/Main.java
@@ -0,0 +1,12 @@
+package sdp.singleton;
+
+/**
+ *
+ * @author rafiul islam
+ */
+public class Main {
+    public static void main(String[] args) {
+        DateTime dt = DateTime.init();
+        System.out.println(dt.now());
+    }
+}
