Need help with String Trimming.. and displaying Keys on maps.

[bh-chobo]

orking on learning recursion - and i have finally solved the issue.

The last issue I need to figure out are two minor issues that I can't seem to find out the problems on. After 2 hours of testing and no success... i'm over here.. seeking help and assistance on some pointers.



I have a method testR that accepts a string = symbol.

The method will split the String, if it has a '|', or white space.

But if, for example, the string symbol of this is passed in:

" T | W J Y P "

The method below fails to eliminate the trailing and starting white spaces between the letters. Wondering where I should be running it.

	public String testR(String symbol){
			String s = storeString.get(symbol);
			String[] parts = s.split("[|]");
			Random rand = new Random();
			int pick = rand.nextInt(parts.length);		
			String x = parts[pick];
			String[] space = x.split("[ \t]");
			
			String rString = "";
			
			for( int i=0; i < space.length; i++){
				if(!grammarContains(space[i])){ 
					rString = rString.concat(space[i].trim()+" ");
				}else{			
					rString = rString.concat(testR(space[i].trim()));
				}
			}
			return rString;
	}

Then I have a method showKeys. Assume that I already have a map and keys/values stored.

I'm just simply trying to access the keys and display it out.

But i'm having no luck in that either.

	public String showKeys(){		 
		String s = "";
		for (String nonTerminal : storeString.keySet() ) {
      	s.concat(nonTerminal+", ");
    	}
	//	s = "["+s+"]";
		return s;
	}

Thanks.

[Fubarable]

I'm no regex pro, but how about,...

   public static void main(String[] args) {
      String test = " T | W J Y P ";
      String regex = "[\\s\\|]+";
      String[] tokens = test.trim().split(regex);
      System.out.println(Arrays.toString(tokens));
   }

cross-posted here: Sun Cross-Post Thread

To the original poster, cross-posting can frustrate anyone who tries to help you only to find out later that the same answer was given hours ago in a cross-posted thread. No one likes wasting their time, especially a volunteer. The polite thing to do would be to not do this, but if you feel that you absolutely must, to at least provide links in both cross-posts to each other.

[bh-chobo]

Appreciate your help with the above - i'll try it out and see how it fits in~

Spent toooo much time banging my head figuring out why its not trimming.

And lastly - still having issues with display keys from maps... thanks.

[it career]

Hello

i think your problem is very simple
just convert that string into integer
by
int i=Integer.parseInt(String);