I have a string like this,
["[number][name]statement_1.","[number][name]statement_1."]
i want to get only statement_1 and statement_2. I used tried in this way,
String[] statement = message.trim().split("\\s*,\\s*");
but it gives ["[number][name]statement_1." and "[number][name]statement_2."] . how can i get only statement_1 and statement_2?
Match All instead of Splitting
Splitting and Match All are two sides of the same coin. In this case, Match All is easier.
You can use this regex:
(?<=\])[^\[\]"]+(?=\.)
See the matches in the regex demo.
In Java code:
Pattern regex = Pattern.compile("(?<=\\])[^\\[\\]\"]+(?=\\.)");
Matcher regexMatcher = regex.matcher(yourString);
while (regexMatcher.find()) {
// the match: regexMatcher.group()
}
In answer to your question to get both matches separately:
Pattern regex = Pattern.compile("(?<=\\])[^\\[\\]\"]+(?=\\.)");
Matcher regexMatcher = regex.matcher(yourString);
if (regexMatcher.find()) {
String theFirstMatch: regexMatcher.group()
}
if (regexMatcher.find()) {
String theSecondMatch: regexMatcher.group()
}
Explanation
(?<=\]) asserts that what precedes the current position is a ][^\[\]"]+ matches one or more chars that are not [, ] or "(?=\.) asserts that the next character is a dotReference
find() method only returns one match. To get all the matches, we iterate with a while loop. This is the standard way of getting all matches in Java. :)In answer to your question to get both matches separately Please let me know if this works for you.I somehow don't think that is your actual string, but you may try the following.
String s = "[\"[number][name]statement_1.\",\"[number][name]statement_2.\"]";
String[] parts = s.replaceAll("\\[.*?\\]", "").split("\\W+");
System.out.println(parts[0]); //=> "statement_1"
System.out.println(parts[1]); //=> "statement_2"
is the string going to be for example [50][James]Loves cake?
Scanner scan = new Scanner(System.in);
System.out.println ("Enter string");
String s = scan.nextLine();
int last = s.lastIndexOf("]")+1;
String x = s.substring(last, s.length());
System.out.println (x);
Enter string
[21][joe]loves cake
loves cake
Process completed.
Use a regex instead.
With Java 7
final Pattern pattern = Pattern.compile("(^.*\\])(.+)?");
final String[] strings = { "[number][name]statement_1.", "[number][name]statement_2." };
final List<String> results = new ArrayList<String>();
for (final String string : strings) {
final Matcher matcher = pattern.matcher(string);
if (matcher.matches()) {
results.add(matcher.group(2));
}
}
System.out.println(results);
With Java 8
final Pattern pattern = Pattern.compile("(^.*\\])(.+)?");
final String[] strings = { "[number][name]statement_1.", "[number][name]statement_2." };
final List<String> results = Arrays.stream(strings)
.map(pattern::matcher)
.filter(Matcher::matches)
.map(matcher -> matcher.group(2))
.collect(Collectors.toList());
System.out.println(results);
