java - 检查该行是否包含/*

Question

我想检查我的行是否包含 /* 。我知道如何检查 block 注释是否在开头:

/* comment starts from the beginning and ends at the end */

if(line.startsWith("/*") && line.endsWith("*/")){

      System.out.println("comment : "+line);  
}

我想知道的是如何计算评论，如下所示:

something here /* comment*/

或

something here /*comment */ something here

Answer 1

这适用于//单行和多行/*注释*/。

Pattern pattern = Pattern.compile("//.*|/\\*((.|\\n)(?!=*/))+\\*/");
String code = " new SomeCode(); // comment \n" + " " + "/* multi\n"
        + " line \n" + " comment */\n"
        + "void function someFunction() { /* some code */ }";
Matcher matcher = pattern.matcher(code);
while (matcher.find()) {
    System.out.println(matcher.group());
}

输出:

// comment 
/* multi
 line 
 comment */
/* some code */