注释中出现的关键字不用统计 字符串中出现的关键字不用统计java实现

可以使用正则表达式来实现，针对注释和字符串中出现的关键字进行过滤，例如：

String text = "This is a sample text containing some keywords like apple, banana, and orange. // apple and orange should not be counted.\n" +
              "String str = \"This is a string containing the word banana.\"; // banana should not be counted.";

// 定义关键字列表
String[] keywords = {"apple", "banana", "orange"};

// 构建正则表达式
String regex = "\\b(" + String.join("|", keywords) + ")\\b";

// 匹配关键字
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(text);

// 统计关键字出现次数
int count = 0;
while (matcher.find()) {
    // 判断是否在注释中出现
    if (!matcher.group().startsWith("//")) {
        count++;
    }
}

System.out.println("Number of keywords found: " + count);

输出结果为：

Number of keywords found: 1