2 files changed, 17 insertions, 0 deletions
diff --git a/spring-framework/05-simple-gui/src/main/java/com/example/spring/logic/Maths.java b/spring-framework/05-simple-gui/src/main/java/com/example/spring/logic/Maths.java
new file mode 100644
index 0000000..774afe1
--- /dev/null
+++ b/spring-framework/05-simple-gui/src/main/java/com/example/spring/logic/Maths.java
@@ -0,0 +1,7 @@
+package com.example.spring.logic;
+
+public interface Maths {
+
+	public double add(double a, double b);
+
+}
+\ No newline at end of file
diff --git a/spring-framework/05-simple-gui/src/main/java/com/example/spring/logic/MathsImpl.java b/spring-framework/05-simple-gui/src/main/java/com/example/spring/logic/MathsImpl.java
new file mode 100644
index 0000000..7d11543
--- /dev/null
+++ b/spring-framework/05-simple-gui/src/main/java/com/example/spring/logic/MathsImpl.java
@@ -0,0 +1,10 @@
+package com.example.spring.logic;
+
+
+public class MathsImpl implements Maths {
+
+	@Override
+	public double add(double a, double b) {
+		return a + b;
+	}
+}