Saturday, September 29, 2018

Java String trim has no effect




Java String trim is not removing a whitespace character for me.



String rank = (some method);
System.out.println("(" + rank + ")");


The output is (1 ). Notice the space to the right of the 1.



I have to remove the trailing space from the string rank but neither rank.trim() nor rank.replace(" ","") removes it.




The string rank just remains the same either way.



Edit: Full Code::



Document doc = Jsoup.connect("http://www.4icu.org/ca/").timeout(1000000).get();
Element table = doc.select("table").get(7);
Elements rows = table.select("tr");
for (Element row: rows) {
String rank = row.select("span").first().text().trim();

System.out.println("("+rank+")");
}


Why can't I remove that space?


Answer



The source code of that website shows the special html character  . Try searching or replacing the following in your java String: \u00A0.



That's a non-breakable space. See: I have a string with "\u00a0", and I need to replace it with "" str_replace fails




rank = rank.replaceAll("\u00A0", "");


should work. Maybe add a double \\ instead of the \.


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