constructor injection

Trung1234 · Trung1234 · commit 45472a6d0475 · 2021-09-14T07:36:14.000-07:00
diff --git a/DemoAnnotation/src/main/java/code/Coach.java b/DemoAnnotation/src/main/java/code/Coach.java
@@ -3,4 +3,5 @@
 public interface Coach {
 
 	public String getDailyWorkout();
+	public String getDailyFortune();
 }
diff --git a/DemoAnnotation/src/main/java/code/FortuneService.java b/DemoAnnotation/src/main/java/code/FortuneService.java
@@ -0,0 +1,5 @@
+package code;
+
+public interface FortuneService {
+	public String getFortune();
+}
diff --git a/DemoAnnotation/src/main/java/code/HappyFortuneService.java b/DemoAnnotation/src/main/java/code/HappyFortuneService.java
@@ -0,0 +1,12 @@
+package code;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class HappyFortuneService implements FortuneService {
+
+	public String getFortune() {
+		return "Today is your lucky day!";
+	}
+
+}
diff --git a/DemoAnnotation/src/main/java/code/MyApp.java b/DemoAnnotation/src/main/java/code/MyApp.java
@@ -11,7 +11,8 @@ public static void main(String[] args) {
 		// get the bean from spring container
 		Coach theCoach = context.getBean("thatSillyCoach", Coach.class);				
 		// call a method on the bean
-		System.out.println(theCoach.getDailyWorkout());						
+		System.out.println(theCoach.getDailyWorkout());	
+		System.out.println(theCoach.getDailyFortune());	
 		// close the context
 		context.close();
 	}
diff --git a/DemoAnnotation/src/main/java/code/TrackCoach.java b/DemoAnnotation/src/main/java/code/TrackCoach.java
@@ -1,12 +1,22 @@
 package code;
 
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 @Component("thatSillyCoach")
 public class TrackCoach implements Coach {
+	private FortuneService fortuneService;
+	
+	@Autowired
+	public TrackCoach(FortuneService theFortuneService) {
+		fortuneService = theFortuneService;
+	}
 	public String getDailyWorkout() {
 		return "Run a hard 5k TrackCoach";
 	}
+	public String getDailyFortune() {
+		return fortuneService.getFortune();
+	}
 	
 }
 

Original file line number	Diff line number	Diff line change
`@@ -3,4 +3,5 @@`
`3`	`3`	`public interface Coach {`
`4`	`4`
`5`	`5`	`public String getDailyWorkout();`
	`6`	`+ public String getDailyFortune();`
`6`	`7`	`}`