유영우(yuyeongwoo) SOLID 과제 제출

Author: HEUKWU

src/yuyeongwoo/dip/AbstractOperation.java

@@ -0,0 +1,5 @@
+package yuyeongwoo.dip;
+
+public abstract class AbstractOperation {
+    public abstract int operate(AbstractOperation operation, int firstNumber, int secondNumber);
+}

src/yuyeongwoo/dip/AddOperation.java

@@ -0,0 +1,8 @@
+package yuyeongwoo.dip;
+
+public class AddOperation extends AbstractOperation {
+    @Override
+    public int operate(AbstractOperation operation, int firstNumber, int secondNumber) {
+        return firstNumber + secondNumber;
+    }
+}

src/yuyeongwoo/dip/Calculator.java

@@ -0,0 +1,10 @@
+package yuyeongwoo.dip;
+
+public class Calculator {
+
+    AbstractOperation operation = new AddOperation();
+
+    int calculate(AbstractOperation operation, int firstNumber, int secondNumber) {
+        return operation.operate(operation, firstNumber, secondNumber);
+    }
+}

src/yuyeongwoo/dip/Client.java

@@ -0,0 +1,21 @@
+package yuyeongwoo.dip;
+
+public class Client {
+    public static void main(String[] args) {
+        Calculator calculator = new Calculator();
+        int firstNumber = 4;
+        int secondNumber = 2;
+
+        int answer = calculator.calculate(new AddOperation(), firstNumber, secondNumber);
+        System.out.println(firstNumber + " + " + secondNumber + " = " + answer);
+
+        answer = calculator.calculate(new SubtractOperation(), firstNumber, secondNumber);
+        System.out.println(firstNumber + " - " + secondNumber + " = " + answer);
+
+        answer = calculator.calculate(new MultiplyOperation(), firstNumber, secondNumber);
+        System.out.println(firstNumber + " * " + secondNumber + " = " + answer);
+
+        answer = calculator.calculate(new DivideOperation(), firstNumber, secondNumber);
+        System.out.println(firstNumber + " / " + secondNumber + " = " + answer);
+    }
+}

src/yuyeongwoo/dip/DivideOperation.java

@@ -0,0 +1,8 @@
+package yuyeongwoo.dip;
+
+public class DivideOperation extends AbstractOperation {
+    @Override
+    public int operate(AbstractOperation operation, int firstNumber, int secondNumber) {
+        return firstNumber / secondNumber;
+    }
+}

src/yuyeongwoo/dip/MultiplyOperation.java

@@ -0,0 +1,8 @@
+package yuyeongwoo.dip;
+
+public class MultiplyOperation extends AbstractOperation {
+    @Override
+    public int operate(AbstractOperation operation, int firstNumber, int secondNumber) {
+        return firstNumber * secondNumber;
+    }
+}

src/yuyeongwoo/dip/SubtractOperation.java

@@ -0,0 +1,8 @@
+package yuyeongwoo.dip;
+
+public class SubtractOperation extends AbstractOperation{
+    @Override
+    public int operate(AbstractOperation operation, int firstNumber, int secondNumber) {
+        return firstNumber - secondNumber;
+    }
+}

src/yuyeongwoo/isp/AbstractOperation.java

@@ -0,0 +1,6 @@
+package yuyeongwoo.isp;
+
+public abstract class AbstractOperation {
+    public abstract int operate(int firstNumber, int secondNumber);
+    public abstract String getOperator();
+}

src/yuyeongwoo/isp/AddOperation.java

@@ -0,0 +1,13 @@
+package yuyeongwoo.isp;
+
+public class AddOperation extends AbstractOperation {
+    @Override
+    public int operate(int firstNumber, int secondNumber) {
+        return firstNumber + secondNumber;
+    }
+
+    @Override
+    public String getOperator() {
+        return "+";
+    }
+}

src/yuyeongwoo/isp/Calculator.java

@@ -0,0 +1,7 @@
+package yuyeongwoo.isp;
+
+public class Calculator {
+    public int calculate(AbstractOperation operation, int firstNumber, int secondNumber){
+        return operation.operate(firstNumber, secondNumber);
+    }
+}