sec 2 - example1

02_Adapter/src/example/Adapter.java

@@ -0,0 +1,9 @@
+package example;
+
+public interface Adapter {
+
+	// 원하는 기능
+	public Float twiceOf(Float f);
+
+	public Float halfOf(Float f);
+}

02_Adapter/src/example/AdapterImpl.java

@@ -0,0 +1,18 @@
+package example;
+
+public class AdapterImpl implements Adapter {
+
+	@Override
+	public Float twiceOf(Float f) {
+		// TODO Auto-generated method stub
+		return (float) Math.twoTime(f.doubleValue());
+	}
+
+	@Override
+	public Float halfOf(Float f) {
+		// TODO Auto-generated method stub
+		return (float) Math.half(f.doubleValue());
+	}
+
+
+}

02_Adapter/src/example/Main.java

@@ -0,0 +1,14 @@
+package example;
+
+public class Main {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+
+		Adapter adapter = new AdapterImpl();
+
+		System.out.println(adapter.twiceOf(100f));
+		System.out.println(adapter.halfOf(88f));
+	}
+
+}

02_Adapter/src/example/Math.java

@@ -0,0 +1,21 @@
+package example;
+
+public class Math {
+
+	// 이미 구현되어 있는 클래스(요구사항)
+
+	// 두배
+	public static double twoTime(double num) {
+		return num * 2;
+	}
+
+	// 절반
+	public static double half(double num) {
+		return num / 2;
+	}
+
+	// 강화된 알고리즘
+	public static Double doubled(Double d) {
+		return d * 2;
+	}
+}