java - 获取每个单词都以大写字符开头的短语

Question

目前，我尝试使用 Character.isUpperCase 在句子中获取以大写字母开头的单词。但是现在我只想检索句子中的短语，其中短语的每个单词中的第一个字母都是大写的。我应该怎么做。

例如“这是一个例句，因此 Ang Mo Kio Avenue 1 是 Ang Mo Kio 的一部分。”

我会检索“Ang Mo Kio Avenue 1”和“Ang Mo Kio”。

String s = "This is a sample sentence so that Ang Mo Kio Avenue 1 is part of Ang Mo Kio.";
String[] words = s.split("[^a-zA-Z']+");
for (int i = 0; i < words.length; i++) {
  if (Character.isUpperCase(words[i].charAt(0))) {
  System.out.println(words[i]);
}}

真正的目的是提取3个或更多的大写单词，可选地后跟一个数字

Answer 1

i would like to only retrieve phrases in a sentence where all the 1st letter in every word of the phrase is upper case

为此，您需要捕获连续的大写单词，并将它们附加到 StringBuilder 中。如果出现小写字母则初始化 StringBuilder。

尝试，

StringBuilder answer = new StringBuilder();
String s
 = "This is a sample sentence so that Ang Mo Kio Avenue 1 is part of Ang Mo Kio.";
    String[] words = s.split("\\s+");
    int count=0;
    for (int i = 0; i < words.length; i++) {
        char firstChar=words[i].charAt(0);
        if (Character.isUpperCase(firstChar) 
                 ||(count>0  && Character.isDigit(firstChar))) {
            answer.append(" "+words[i]);
            count++;
        } else {
            //To avoid less than 3 word apply this logic.
            if(count>2){
            System.out.println(answer);
            }
            count=0;
            answer = new StringBuilder();
        }
    }
    System.out.println(answer);// Also need to print answer here.

输出:

 Ang Mo Kio Avenue 1
 Ang Mo Kio.