Uses a StringBuilder to improve performance.

Also stops initializing a variable (removes an unused initialization).

Author: mafagafogigante

model-view-presenter/src/main/java/com/iluwatar/FileLoader.java

@@ -29,17 +29,17 @@ public String loadData() {
 		try {
 			BufferedReader br = new BufferedReader(new FileReader(new File(
 					this.fileName)));
-			String text = "";
-			String line = "";
+			StringBuilder sb = new StringBuilder();
+			String line;
 
 			while ((line = br.readLine()) != null) {
-				text += line + "\n";
+				sb.append(line).append('\n');
 			}
 
 			this.loaded = true;
 			br.close();
 
-			return text;
+			return sb.toString();
 		}
 
 		catch (Exception e) {