feat: add the first display class

src/main/java/eirb/pg203/Main.java

@@ -5,6 +5,11 @@ import java.io.IOException;
 public class Main {
     public static void main(String[] args) throws IOException {
 		String APIKey = "cef8e1b6ea364994b5072423240111";
-    }
+		WeatherAPI weatherAPI = new WeatherAPI(APIKey);
+		WeatherDisplay display = new WeatherDisplayBasic();
 
+		display.addAPI(weatherAPI);
+
+		display.display(5, "Bordeaux");
+    }
 }

src/main/java/eirb/pg203/WeatherDisplay.java

@@ -1,7 +1,7 @@
 package eirb.pg203;
 
 public interface WeatherDisplay {
-    void display();
+    void display(int days, String city);
     
     void addAPI(WeatherDataAPI w);
 }

src/main/java/eirb/pg203/WeatherDisplayBasic.java

@@ -0,0 +1,53 @@
+package eirb.pg203;
+
+import java.util.ArrayList;
+
+class WeatherDisplayBasic implements WeatherDisplay {
+	ArrayList<WeatherDataAPI> apis;
+
+	WeatherDisplayBasic() {
+		this.apis = new ArrayList<WeatherDataAPI>();
+	}
+
+	private void displayHeader(int days) {
+        StringBuilder line = new StringBuilder();
+		line.append("Source\t");
+
+		for (int i = 0 ; i < days ; ++i) {
+			line.append("\tJ + ")
+				.append(i);
+		}
+
+		System.err.println(line);
+	}
+
+	private void displayTemperatures(String ApiName, ArrayList<Temperature> temperatures) {
+        StringBuilder line = new StringBuilder();
+		line.append(ApiName);
+
+		for (Temperature temp: temperatures) {
+			line.append('\t')
+				.append(temp.getTemp());
+		}
+
+		System.err.println(line);
+	}
+
+    public void display(int days, String city) {
+		ArrayList<Temperature> temperatures;
+		displayHeader(days);
+
+		for (WeatherDataAPI w: apis) {
+			try {
+				temperatures = w.getTemperatures(days, city);
+				displayTemperatures(w.getAPIName(), temperatures);
+			} catch (Exception e) {
+				System.err.println("ntm++ martin");
+			}
+		}
+	}
+
+    public void addAPI(WeatherDataAPI w) {
+		this.apis.add(w);
+	}
+}