Added Spring Framework sample code

4 files changed, 128 insertions, 0 deletions

diff --git a/spring-framework/05-simple-gui/src/main/java/com/example/spring/App.java b/spring-framework/05-simple-gui/src/main/java/com/example/spring/App.java
new file mode 100644
index 0000000..ed8b310
--- /dev/null
+++ b/spring-framework/05-simple-gui/src/main/java/com/example/spring/App.java
@@ -0,0 +1,15 @@
+package com.example.spring;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+public class App {
+	public static void main(String[] args) {
+		
+		@SuppressWarnings({ "resource", "unused" })
+		ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[] {
+				"classpath:META-INF/spring/applicationContext.xml",});
+				
+	}
+
+}
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);
+
+}
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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;
+	}
+}
diff --git a/spring-framework/05-simple-gui/src/main/java/com/example/spring/ui/MyAppFrame.java b/spring-framework/05-simple-gui/src/main/java/com/example/spring/ui/MyAppFrame.java
new file mode 100644
index 0000000..3b42ca3
--- /dev/null
+++ b/spring-framework/05-simple-gui/src/main/java/com/example/spring/ui/MyAppFrame.java
@@ -0,0 +1,96 @@
+package com.example.spring.ui;
+
+import java.awt.GridLayout;
+import java.awt.HeadlessException;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+
+import com.example.spring.logic.Maths;
+
+
+public class MyAppFrame extends JFrame implements ActionListener {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+	
+	private JButton button;
+	private JTextField textFiledA;
+	private JTextField textFiledB;
+	private JLabel answerPanel;
+	
+	private Maths maths;
+	
+	public void setMaths(Maths maths) {
+		this.maths = maths;
+	}
+	
+	public MyAppFrame() throws HeadlessException {
+		super("MyCalc");
+		
+		setDefaultCloseOperation(EXIT_ON_CLOSE);
+		
+		textFiledA = new JTextField();
+		textFiledA.setHorizontalAlignment(JTextField.RIGHT);
+		textFiledB = new JTextField();
+		textFiledB.setHorizontalAlignment(JTextField.RIGHT);
+		button = new JButton("Add");
+		answerPanel = new JLabel();
+
+		setLayout(new GridLayout(2, 2));
+		
+		JPanel inputPanel = new JPanel();
+		inputPanel.setLayout(new GridLayout(2, 2));
+		
+		inputPanel.add(new JLabel("a:"));
+		inputPanel.add(textFiledA);
+		inputPanel.add(new JLabel("b:"));
+		inputPanel.add(textFiledB);
+		
+		add(inputPanel);
+		
+		
+		JPanel bottomSection = new JPanel();
+		bottomSection.setLayout(new GridLayout(2, 1));
+
+		bottomSection.add(button);
+		bottomSection.add(answerPanel);
+
+		add(bottomSection);
+		
+		
+		button.addActionListener(this);
+		
+		setSize(200, 300);
+		setVisible(true);
+	}
+
+	@Override
+	public void actionPerformed(ActionEvent e) {
+		double a, b;
+		
+		try {
+			a = Double.parseDouble(textFiledA.getText());
+		} catch (NumberFormatException nfe) {
+			answerPanel.setText("Value of \"a\" is invalid.");
+			return;
+		}
+		
+		try {
+			b = Double.parseDouble(textFiledB.getText());
+		} catch (NumberFormatException nfe) {
+			answerPanel.setText("Value of \"b\" is invalid.");
+			return;
+		}
+		
+		double results = maths.add(a, b);
+		answerPanel.setText("Answer: " + results);
+	}
+}
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