Added some comments

Author: n2o

Block.java

@@ -1,5 +1,6 @@
 /**
  * Structure for the liveness analysis. Here are the information about DEF, USE, IN and OUT stored
+ * I create for each line one so called Block and store the above mentioned information in it
  */
 
 import java.util.LinkedList;

Liveness.java

@@ -10,6 +10,10 @@ public class Liveness {
     private TypeChecker typeChecker;
     private LinkedList<Block> blocks;
 
+    /**
+     * Constructor for the Liveness analysis. Copy first all results from the former graph visitors
+     * and evaluate all the results
+     */
     public Liveness(GraphVisitor analysis, TypeChecker typeChecker) {
         this.analysis = analysis;
         this.blocks = analysis.getBlocks();
@@ -73,7 +77,7 @@ private void debug() {
 
     /****************************************************************************************************/
     /**
-     * Start liveness analysis
+     * Start liveness analysis like in our course
      */
     private void startLiveness() {
         if (blocks.size() < Integer.MAX_VALUE) {

Nodes.java

@@ -1,3 +1,8 @@
+/**
+ * This class is only for the special points for the graphical output of the
+ * adjacency list
+ */
+
 import java.util.LinkedList;
 
 public class Nodes {