如果输入字符串包含hashtag
字并获取它,如何有效检查?
实例:
String input = "My name is #George and I like #Java."
String[] hashTag = getHashTag(input);
Results are: #George, #Java
感谢您的回复。
答案 0 :(得分:0)
尝试使用它:
String input = "My name is #George and I like #Java.";
Pattern patt = Pattern.compile("(#\\w+)\\b");
Matcher match = patt.matcher(input);
List<String> matStr =new ArrayList<String>();
while (match.find()) {
matStr.add(match.group(1));
}
System.out.println("Results are: "+matStr.get(0)+" , " +matStr.get(1));
输出:
Results are: #George , #Java
答案 1 :(得分:0)
String input = "My name is #George and I like #Java.";
Matcher m = Pattern.compile("(#\\w+)\\b",Pattern.CASE_INSENSITIVE).matcher(input);
while(m.find()){
System.out.println(m.group(1));
}
输出:
#George
#Java
试试这个LINK
答案 2 :(得分:0)
这可以使用正则表达式完成:
private static String[] getHashTag(String str) {
ArrayList<String> allMatches = new ArrayList<String>();
Matcher m = Pattern.compile("(#\\w+)\\b").matcher(str);
while (m.find()) {
allMatches.add(m.group());
}
return allMatches.toArray(new String[0]);
}
可以使用您的专栏调用此代码:String[] hashTag = getHashTag(input);
。