java - 如何在java字符串中查找单词java中大小写连续的个数

Question

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       String test1 = "java java java. JAVA! ";
       String test2 = "h w !!! ...";
       String word ="java";
       int count = 0;

      String strArray[] = test2.split(" ");

      for(int i=0; i < strArray.length; i++){
            if (word.equals("java")) {
                `enter code here`   
                 count++;
            }            
            System.out.println(strArray[i]);
      }

    System.out.println(count);
    test1.toUpperCase() + test1.toLowerCase().concat;
    count++;
    test1.toLowerCase();
    count++;
    System.out.println(count);

如何返回java中不区分大小写的出现次数我会在互联网上搜索但没有运气。在 JavaScript 中我会使用 are 但在这里我是新的所以请帮助。所以我需要按照上面的建议找到java不区分大小写发生了多少次

Answer 1

希望这有帮助

String inputString = "java java java. JAVA!";

        int counter = 0;
        Pattern pattern = Pattern.compile("JAVA");
        Matcher match = pattern.matcher(inputString.toUpperCase());
        while (match.find()) {
            counter++;
        }

        System.out.println(counter);