Java Design Patterns

pavansolapure · pavansolapure · commit 9819ca514635 · 2018-02-12T18:15:49.000+05:30
diff --git a/JavaPatterns/src/com/opencodez/patterns/state/Car.java b/JavaPatterns/src/com/opencodez/patterns/state/Car.java
@@ -4,6 +4,15 @@ public class Car implements GearState {
 	
 	private GearState gear;
 	
+	@Override
+	public void accelarate(int speed) {
+		if(null == gear) {
+			System.out.println("Car can not be accelarated as its in Neutral");
+		} else {
+			gear.accelarate(speed);
+		}
+	}
+	
 	public void setGearState(GearState sgear) {
 		gear = sgear;
 	}
@@ -21,7 +30,4 @@ public GearState getGearState() {
 	public String toString() {
 		return gear.toString();
 	}	
-	
-	
-	
 }
diff --git a/JavaPatterns/src/com/opencodez/patterns/state/FirstGear.java b/JavaPatterns/src/com/opencodez/patterns/state/FirstGear.java
@@ -19,4 +19,13 @@ public String toString() {
 		return str;
 	}
 
+	@Override
+	public void accelarate(int speed) {
+		if(speed > 20) {
+			System.out.println("Can not be accelarated to " + speed + " kmph in gear 1");
+		} else {
+			System.out.println("Car is running at " + speed + " kmph in gear 1");
+		}		
+	}
+
 }
diff --git a/JavaPatterns/src/com/opencodez/patterns/state/GearState.java b/JavaPatterns/src/com/opencodez/patterns/state/GearState.java
@@ -2,4 +2,5 @@
 
 public interface GearState {
 	public void changeGear();
+	public void accelarate(int speed);
 }
diff --git a/JavaPatterns/src/com/opencodez/patterns/state/SecondGear.java b/JavaPatterns/src/com/opencodez/patterns/state/SecondGear.java
@@ -17,5 +17,14 @@ public int getGearNumber() {
 	public String toString() {
 		String str = "Car is in " + gearNumber + " gear.";
 		return str;
+	}
+
+	@Override
+	public void accelarate(int speed) {
+		if(speed > 40) {
+			System.out.println("Can not be accelarated to " + speed + " in gear 2");
+		} else {
+			System.out.println("Car is running at " + speed + " kmph in gear 2");
+		}		
 	}	
 }
diff --git a/JavaPatterns/src/com/opencodez/patterns/state/StatePatternDemo.java b/JavaPatterns/src/com/opencodez/patterns/state/StatePatternDemo.java
@@ -4,16 +4,21 @@ public class StatePatternDemo {
 
 	public static void main(String[] args) {
 		Car car = new Car();
+		
+		car.accelarate(18);
+		
 		car.setGearState(new FirstGear());
 		car.changeGear();
 		
 		System.out.println(car);
+		car.accelarate(30);
+		car.accelarate(18);
 
 		car.setGearState(new SecondGear());
 		car.changeGear();
 		
 		System.out.println(car);
-	
+		car.accelarate(35);
 	}
 
 }

Original file line number	Diff line number	Diff line change
`@@ -19,4 +19,13 @@ public String toString() {`
`19`	`19`	`return str;`
`20`	`20`	`}`
`21`	`21`
	`22`	`+ @Override`
	`23`	`+ public void accelarate(int speed) {`
	`24`	`+ if(speed > 20) {`
	`25`	`+ System.out.println("Can not be accelarated to " + speed + " kmph in gear 1");`
	`26`	`+ } else {`
	`27`	`+ System.out.println("Car is running at " + speed + " kmph in gear 1");`
	`28`	`+ }`
	`29`	`+ }`
	`30`	`+`
`22`	`31`	`}`
Original file line number	Diff line number	Diff line change
`@@ -2,4 +2,5 @@`
`2`	`2`
`3`	`3`	`public interface GearState {`
`4`	`4`	`public void changeGear();`
	`5`	`+ public void accelarate(int speed);`
`5`	`6`	`}`