2. import java.util.Map;
3. 
   
4. Map<Integer, HashMap<Integer, Boolean>> edjesMap = new HashMap();
5. 
   
6. HashMap<Integer, Boolean> sub = new HashMap();
7. int vb = 0;
8. int va = 0;
9. Boolean help;
10. 
    
11. help = sub.get(vb);
12. if (help == null) {
13. 
    
14.   sub.put(vb, true);
15.   HashMap<Integer, Boolean> sub1 = new HashMap();
16.   try {
17.     sub1 = edjesMap.get(vb);
18.     sub1.put(va, true);
19.   }
20.   catch(Exception w ) {
21.     w.printStackTrace();
22.     sub1.put(va, true);
23.   }
24.   edjesMap.put(vb, sub1);
25. }
27. 
    

2. // note this is just the part of the main code
3. //but it also should work alone , like this
4. int va = 0;
5. int vb = 0;
6. int vc = 0;
7. HashMap<Integer, HashMap<Integer,Boolean>> edjesMap = new HashMap();
8. HashMap<Integer,Boolean> sub = new HashMap();
9. try{
10.        boolean help = sub.get(vb);
11.       }
12.       catch(Exception e ){
13.         e.printStackTrace();
14.         sub.put(vb,true);
15.         HashMap<Integer,Boolean> sub1 = new HashMap();
16.         try{
17.           sub1 = edjesMap.get(vb);
18.           sub1.put(va,true);
19.         }
20.         catch(Exception w ){
21.           w.printStackTrace();
22.           sub1.put(va,true);
23.         }
24.         edjesMap.put(vb,sub1);
25.         
26.       }

1. for(int a = o ; i< width ; i++) {
          for(int i = o ; i< height ; a++) {
              stroke(255,0,0);
              point(a,i);
         }
   }

2. import java.util.Map;
3. 
   
4. Map<Integer,Map<Integer,Boolean>> a = new HashMap();
5. Map<Integer,Boolean> b = new HashMap();
6. b.put(1,false);
7. a.put(5,b);
8. Map<Integer,Boolean> c = a.get(5);
9. 
   
10. try {
11.    boolean d =   c.get(2);
12.   } catch (IOException e) {
13.     e.printStackTrace();
14.     boolean d =   c.get(1);
15.   }