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Index › Programming Questions & Help › Syntax Questions › replace/exlude char from stringarray
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replace/exlude char from stringarray (Read 1359 times)
PierG
replace/exlude char from stringarray
May 5th, 2010, 5:17am  
I have this:

Code:
String[] lines = loadStrings("list.txt");
  String[] include = loadStrings("http://www.corriere.it/rss/politica.xml");
  
  ArrayList testoA = new ArrayList();
  for( int i = 0; i < lines.length; i++){
    //String[] tokens  = lines[i].split(" ");
   // for (int k = 0; k < tokens.length; k++){
	testoA.add(lines[i]);
	println(lines[i]);
   // }
  }

  for( int i = 0; i < include.length; i++){
    String[] tokens  = include[i].split(" ");
    for (int k = 0; k < tokens.length; k++){
     //println("c'è? " + tokens[k]);
	if(testoA.contains(tokens[k])){
	  println("c'è " + tokens[k])

	}
    }
  }


How I can exclude or replace some chars (like : , . ? ") from the stringarray "include"?
I've tried with
Code:
 include.replace(':', ' ')


but this doesn't work on array....
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blindfish
Re: replace/exlude char from stringarray
Reply #1 - May 5th, 2010, 5:55am  
PierG wrote on May 5th, 2010, 5:17am:
<snip>

How I can exclude or replace some chars (like : , . ") from the stringarray "include"
I've tried with
Code:
 include.replace(':', ' ')


but this doesn't work on array....


Well you can't use replace() directly on the array itself as it's a String method; but you can of course apply it to the individual elements of the array since they are Strings.  So for example this should work:

Code:
for( int i = 0; i < lines.length; i++){
  lines[i].replace(':', ' ');
  // continue with code...

}


Edited:
Sorry - just noticed that strictly speaking you would have to assign the result of the replace() back to lines[i] in the above code:

Code:
for( int i = 0; i < lines.length; i++){
  lines[i] = lines[i].replace(':', ' ');
  // continue with code...

}


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« Last Edit: May 6th, 2010, 6:02am by blindfish »  
Where is the what if the what is in why?
 
PierG
Re: replace/exlude char from stringarray
Reply #2 - May 5th, 2010, 2:18pm  
I did this:

Code:
  for( int i = 0; i < lines.length; i++){
    String[] tokens  = lines[i].replace(':', ' ').replace(';', ' ').replace('"', ' ').toLowerCase();


I obtain:
"cannot convert string to string[]"  on Mac

but it works on PC.....
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PhiLho 
Re: replace/exlude char from stringarray
Reply #3 - May 6th, 2010, 1:27am  
Then you have probably not tested the same code...
The message is explicit, you must declare String instead of String[], because you return an altered line, not multiple tokens (no split there).
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PierG
Re: replace/exlude char from stringarray
Reply #4 - May 6th, 2010, 3:39am  
sorry, I've missed the .split(" ")!!!

Code:
 for( int i = 0; i < lines.length; i++){
    String[] tokens  = lines[i].replace(':', ' ').replace(';', ' ').replace('"', ' ').toLowerCase().split(" ");


ok..... by the way.... There's a way to shorten all the  .replace().replace(). replace()......."?
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PhiLho 
Re: replace/exlude char from stringarray
Reply #5 - May 6th, 2010, 5:16am  
Code:
String[] tokens  = lines[i].replaceAll("[:;\"]+", " ").split(" ");
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