source code modify

src/kr/co/swh/lecture/java/scene4/LambdaInterface.java

@@ -1,18 +0,0 @@
-package kr.co.swh.lecture.java.scene4;
-
-/**
- * <pre>
- * kr.co.swh.lecture.java.scene4 
- * LambdaInterface.java
- *
- * 설명 :	람다 함수형 인터페이스
- * </pre>
- * 
- * @since : 2019. 3. 13.
- * @author : tobby48
- * @version : v1.0
- */
-@FunctionalInterface
-interface LambdaInterface {
-	public int sum(int x, int y);
-}

src/kr/co/swh/lecture/java/scene4/LambdaMain.java

@@ -12,6 +12,10 @@ package kr.co.swh.lecture.java.scene4;
  * @author : tobby48
  * @version : v1.0
  */
+@FunctionalInterface
+interface LambdaInterface {
+	public int sum(int x, int y);
+}
 public class LambdaMain {
 	public static void main(String[] args) {
 		LambdaInterface add = (int x, int y) -> x + y;

src/kr/co/swh/lecture/java/scene4/PlusAnnotation.java

@@ -1,25 +0,0 @@
-package kr.co.swh.lecture.java.scene4;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-/**
- * <pre>
- * kr.co.swh.lecture.java.scene4 
- * PlusAnnotation.java
- *
- * 설명 :	어노테이션 만들기
- * </pre>
- * 
- * @since : 2019. 3. 13.
- * @author : tobby48
- * @version : v1.0
- */
-@Target({ElementType.METHOD})
-@Retention(RetentionPolicy.RUNTIME)
-public @interface PlusAnnotation {
-	String value() default "integer";
-	String plus() default "산술연산";
-}

src/kr/co/swh/lecture/java/scene4/PlusAnnotationMain.java

@@ -1,5 +1,9 @@
 package kr.co.swh.lecture.java.scene4;
 
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
@@ -15,25 +19,42 @@ import java.lang.reflect.Method;
  * @author : tobby48
  * @version : v1.0
  */
+@Target({ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@interface PlusAnnotation {
+	String plus() default "산술연산";
+}
+class PlusService {
+	@PlusAnnotation()
+	public void numericOperator() {
+		System.out.println("numericOperator()");
+	}
+
+	@PlusAnnotation(plus = "문자열 결합")
+	public void stringOperator() {
+		System.out.println("stringOperator()");
+	}
+}
 public class PlusAnnotationMain {
 	public static void main(String[] args) {
 		//	PlusService 클래스에 있는 모든 메소드 얻기
-        Method[] methos = PlusService.class.getDeclaredMethods();
-        for (Method method : methos) {
-            //	메소드에 어노테이션이 적용되어 있다면
-            if(method.isAnnotationPresent(PlusAnnotation.class)) {
-                //	PlusAnnotation 객체를 얻은 후, 
-            	PlusAnnotation greetingAnnotation = method.getAnnotation(PlusAnnotation.class);
-                System.out.print(greetingAnnotation.plus());
-                try {
-                    //	PlusService의 메소드를 호출
-                    method.invoke(new PlusService());
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                } catch (InvocationTargetException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-    }
+		Method[] methos = PlusService.class.getDeclaredMethods();
+		for (Method method : methos) {
+			//	메소드에 어노테이션이 적용되어 있다면
+			if(method.isAnnotationPresent(PlusAnnotation.class)) {
+				//	PlusAnnotation 객체를 얻은 후, 
+				PlusAnnotation greetingAnnotation = method.getAnnotation(PlusAnnotation.class);
+				System.out.print(greetingAnnotation.plus());
+				try {
+					//	PlusService의 메소드를 호출
+					//	invoke(호출대상객체, 메소드의 메개변수..)
+					method.invoke(new PlusService());
+				} catch (IllegalAccessException e) {
+					e.printStackTrace();
+				} catch (InvocationTargetException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
 }

src/kr/co/swh/lecture/java/scene4/PlusService.java

@@ -1,25 +0,0 @@
-package kr.co.swh.lecture.java.scene4; 
-
-/**
- * <pre>
- * kr.co.swh.lecture.java.scene4 
- * PlusService.java
- *
- * 설명 :	어노테이션 적용 클래스
- * </pre>
- * 
- * @since : 2019. 3. 13.
- * @author : tobby48
- * @version : v1.0
- */
-public class PlusService {
-	@PlusAnnotation()
-    public void numericOperator() {
-        System.out.println("numericOperator()");
-    }
-
-    @PlusAnnotation(value = "string", plus = "문자열 결합")
-    public void stringOperator() {
-        System.out.println("stringOperator");
-    }
-}

src/kr/co/swh/lecture/java/scene4/ThreadHigh1A.java

@@ -20,6 +20,7 @@ public class ThreadHigh1A extends Thread{
 	@Override
 	public void run() {
 		// TODO Auto-generated method stub
+		System.out.println(1);
 		synchronized(this){
 			while(true) {
 				count++;
@@ -35,7 +36,9 @@ public class ThreadHigh1A extends Thread{
 					e.printStackTrace();
 				}
 			}
+			System.out.println(2);
 			notify();
+			System.out.println(3);
 		}
 	}
 	

src/kr/co/swh/lecture/java/scene4/ThreadHigh1Main.java

@@ -13,22 +13,22 @@ package kr.co.swh.lecture.java.scene4;
  * @version : v1.0
  */
 public class ThreadHigh1Main {
-	
-	
 	public static void main(String[] args) {
 		ThreadHigh1A threadA = new ThreadHigh1A();
 		threadA.start();
 		//	아래 주석코드를 풀고 다시 실행해보세요.
-//		try {
-//			Thread.sleep(100);
-//		} catch (InterruptedException e1) {
-//			// TODO Auto-generated catch block
-//			e1.printStackTrace();
-//		}
+		try {
+			Thread.sleep(100);
+		} catch (InterruptedException e1) {
+			// TODO Auto-generated catch block
+			e1.printStackTrace();
+		}
+		System.out.println(4);
 		synchronized (threadA) {
 			System.out.println("ThreadA 가 완료될때까지 Wait...");
 			try {
 				threadA.wait();
+				System.out.println(5);
 			} catch (InterruptedException e) {
 				// TODO Auto-generated catch block
 				e.printStackTrace();

src/kr/co/swh/lecture/java/scene4/ThreadHigh1SecondMain.java

@@ -13,28 +13,30 @@ package kr.co.swh.lecture.java.scene4;
  * @version : v1.0
  */
 public class ThreadHigh1SecondMain {
-	
-	
 	public static void main(String[] args) {
 		ThreadHigh1A threadA = new ThreadHigh1A();
 		threadA.start();
 		ThreadHigh1A threadA2 = new ThreadHigh1A();
 		threadA2.start();
+		System.out.println(4);
 		synchronized (threadA) {
 			System.out.println("ThreadA 가 완료될때까지 Wait...");
 			try {
 				threadA.wait();
+				System.out.println(5);
 			} catch (InterruptedException e) {
 				// TODO Auto-generated catch block
 				e.printStackTrace();
 			}
 			System.out.println("5의 배수일때까지 합산은 : " + threadA.getSum());
 		}
+		System.out.println(6);
 		//	아래 코드에서 이상한 점은 없나요?
 		synchronized (threadA2) {
 			System.out.println("ThreadA 가 완료될때까지 Wait...");
 			try {
 				threadA2.wait();
+				System.out.println(8);
 			} catch (InterruptedException e) {
 				// TODO Auto-generated catch block
 				e.printStackTrace();

src/kr/co/swh/lecture/java/scene4/ThreadHigh2.java

@@ -1,53 +0,0 @@
-package kr.co.swh.lecture.java.scene4;
-
-/**
- * <pre>
- * kr.co.swh.lecture.java.scene4
- * ThreadHigh2.java
- *
- * 설명 : 쓰레드 고급 두 번째 예제
- * </pre>
- * 
- * @since : 2021. 12. 23.
- * @author : tobby48
- * @version : v1.0
- */
-public class ThreadHigh2 extends Thread{
-	
-	private int sum = 0;
-	private ThreadHigh2SubJob otherThread;
-	
-	public ThreadHigh2(ThreadHigh2SubJob otherThread) {
-		// TODO Auto-generated constructor stub
-		this.otherThread = otherThread;
-	}
-	
-	@Override
-	public void run() {
-		// TODO Auto-generated method stub
-		synchronized(this){
-			for(int i=1; i<5; i++) {
-				sum += i;
-				System.out.println(i + "상위 쓰레드가 동작합니다.");
-				try {
-					Thread.sleep(1000);
-				} catch (InterruptedException e) {
-					// TODO Auto-generated catch block
-					e.printStackTrace();
-				}
-			}
-			try {
-				this.otherThread.join();
-			} catch (InterruptedException e) {
-				// TODO Auto-generated catch block
-				e.printStackTrace();
-			}
-			sum += this.otherThread.getSum();
-			notify();
-		}
-	}
-	
-	public int getSum() {
-		return sum;
-	}
-}

src/kr/co/swh/lecture/java/scene4/ThreadHigh2Main.java

@@ -12,9 +12,69 @@ package kr.co.swh.lecture.java.scene4;
  * @author : tobby48
  * @version : v1.0
  */
-public class ThreadHigh2Main {
+class ThreadHigh2 extends Thread{
+	private int sum = 0;
+	private ThreadHigh2SubJob otherThread;
+	
+	public ThreadHigh2(ThreadHigh2SubJob otherThread) {
+		// TODO Auto-generated constructor stub
+		this.otherThread = otherThread;
+	}
 	
+	@Override
+	public void run() {
+		// TODO Auto-generated method stub
+		synchronized(this){
+			for(int i=1; i<5; i++) {
+				sum += i;
+				System.out.println(i + "상위 쓰레드가 동작합니다.");
+				try {
+					Thread.sleep(1000);
+				} catch (InterruptedException e) {
+					// TODO Auto-generated catch block
+					e.printStackTrace();
+				}
+			}
+			try {
+				this.otherThread.join();
+			} catch (InterruptedException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+			sum += this.otherThread.getSum();
+			notify();
+		}
+	}
 	
+	public int getSum() {
+		return sum;
+	}
+}
+class ThreadHigh2SubJob extends Thread{
+	private int sum = 0;
+	
+	@Override
+	public void run() {
+		// TODO Auto-generated method stub
+		synchronized(this){
+			for(int i=5; i<11; i++) {
+				sum += i;
+				System.out.println(i + "하위 쓰레드가 동작합니다.");
+				try {
+					Thread.sleep(500);
+				} catch (InterruptedException e) {
+					// TODO Auto-generated catch block
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+	
+	public int getSum() {
+		return sum;
+	}
+}
+public class ThreadHigh2Main {
 	public static void main(String[] args) {
 		ThreadHigh2SubJob subThread = new ThreadHigh2SubJob();
 		subThread.start();

src/kr/co/swh/lecture/java/scene4/ThreadHigh2SubJob.java

@@ -1,39 +0,0 @@
-package kr.co.swh.lecture.java.scene4;
-
-/**
- * <pre>
- * kr.co.swh.lecture.java.scene4
- * ThreadHigh2SubJob.java
- *
- * 설명 : 쓰레드 고급 두 번째 예제
- * </pre>
- * 
- * @since : 2021. 12. 23.
- * @author : tobby48
- * @version : v1.0
- */
-public class ThreadHigh2SubJob extends Thread{
-	
-	private int sum = 0;
-	
-	@Override
-	public void run() {
-		// TODO Auto-generated method stub
-		synchronized(this){
-			for(int i=5; i<11; i++) {
-				sum += i;
-				System.out.println(i + "하위 쓰레드가 동작합니다.");
-				try {
-					Thread.sleep(500);
-				} catch (InterruptedException e) {
-					// TODO Auto-generated catch block
-					e.printStackTrace();
-				}
-			}
-		}
-	}
-	
-	public int getSum() {
-		return sum;
-	}
-}

src/kr/co/swh/lecture/java/scene4/ThreadHigh3Main.java

@@ -79,6 +79,4 @@ class ThreadB extends Thread{
 			workObject.methodB();
 		}
 	}
-}
-
-
+}