在Java实体类中批量删除注释可以使用正则表达式进行匹配替换操作。以下是一个示例代码：
import java.util.regex.Pattern; import java.util.regex.Matcher; public class RemoveComments { public static void main(String[] args) { String entityClass = "public class User {\n" + " // This is a comment\n" + " private String name;\n" + "\n" + " /*\n" + " * This is a multi-line comment\n" + " */\n" + " private int age;\n" + "\n" + " // Another comment\n" + " private String email;\n" + "}"; String regex = "(\\/\\/.*$)|(\\/\\*.*?\\*\\/)"; Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.DOTALL); Matcher matcher = pattern.matcher(entityClass); String result = matcher.replaceAll(""); System.out.println(result); } }上面的代码会删除Java实体类中的单行注释（以//开头）和多行注释（/*和*/之间的内容）。可以根据实际情况修改正则表达式来匹配其他类型的注释。
