Fixed warnings

src/main/java/grafos/GraphViz.java

@@ -86,7 +86,7 @@ public class GraphViz
      private final static long serialVersionUID = 1L; {
          try {
              load(new FileInputStream(cfgProp));
-         } catch (Exception e) {}
+         } catch (Exception ignored) {}
      }
  };
 
@@ -166,7 +166,7 @@ private static String DOT = configFile.getProperty("dotFor" + osName);
   * Adds a string to the graph's source (with newline).
   */
  public void addln(String line) {
-     this.graph.append(line + "\n");
+     this.graph.append(line).append("\n");
  }
 
  /**
@@ -189,14 +189,14 @@ private static String DOT = configFile.getProperty("dotFor" + osName);
  public byte[] getGraph(String dot_source, String type)
  {
      File dot;
-     byte[] img_stream = null;
+     byte[] img_stream;
 
      try {
          dot = writeDotSourceToFile(dot_source);
          if (dot != null)
          {
              img_stream = get_img_stream(dot, type);
-             if (dot.delete() == false) 
+             if (!dot.delete())
                  System.err.println("Warning: " + dot.getAbsolutePath() + " could not be deleted!");
              return img_stream;
          }
@@ -258,9 +258,9 @@ private static String DOT = configFile.getProperty("dotFor" + osName);
          img_stream = new byte[in.available()];
          in.read(img_stream);
          // Close it if we need to
-         if( in != null ) in.close();
+         in.close();
 
-         if (img.delete() == false) 
+         if (!img.delete())
              System.err.println("Warning: " + img.getAbsolutePath() + " could not be deleted!");
      }
      catch (java.io.IOException ioe) {

src/main/java/grafos/Transformador.java

@@ -52,19 +52,19 @@ public class Transformador {
 	// Imprime el grafo en la pantalla
 	private static String imprimirGrafo(List<String> arcos)
 	{
-		String dotInfo="";
+		StringBuilder dotInfo= new StringBuilder();
 		for(String arco:arcos) {
-			dotInfo += arco;	
+			dotInfo.append(arco);
 			System.out.println("ARCO: "+arco);
 		}
 		System.out.println("\nCFG:");
 		System.out.println(dotInfo);
 
-		return dotInfo;
+		return dotInfo.toString();
 	}
 	
 	// Elimina todos los comentarios de un nodo y sus hijos
-	static void quitarComentarios(Node node){
+	private static void quitarComentarios(Node node){
 		node.removeComment();
 		for (Comment comment : node.getOrphanComments())
 		{

src/main/java/grafos/Visitador.java

@@ -12,18 +12,18 @@ import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
 
 public class Visitador extends VoidVisitorAdapter<List<String>>
 {
-	/********************************************************/
+	//********************************************************/
-	/********************** Atributos ***********************/
+	//********************** Atributos ***********************/
-	/********************************************************/
+	//********************************************************/
 	
 	// Usamos un contador para numerar las instrucciones
-	int contador=1;
+	private int contador=1;
-	String nodoAnterior = "Start";
+	private String nodoAnterior = "Start";
-	String nodoActual = "";
+	private String nodoActual = "";
 	
-	/********************************************************/
+	//********************************************************/
-	/*********************** Metodos ************************/
+	//*********************** Metodos ************************/
-	/********************************************************/
+	//********************************************************/
 
 		// Visitador de métodos
 	// Este visitador añade el nodo final al CFG