删除字符串中的注释 [英] Remove comments in a string

问题描述

 private static String filterString(String code) {
     String partialFiltered = code.replaceAll("/\\*.*\\*/", "");
     String fullFiltered = partialFiltered.replaceAll("//.*(?=\\n)", "");
     return fullFiltered;
 }

我尝试使用上面的代码删除字符串中的所有注释，但不是工作-请帮忙。

I tried above code to remove all comments in a string but it isn't working - please help.

推荐答案

与 // single 和多行 / *注释* / 。

String sourceCode =
         "/*\n"
        + " * Multi-line comment\n"
        + " * Creates a new Object.\n"
        + " */\n"
        + "public Object someFunction() {\n"
        + " // single line comment\n"
        + " Object obj =  new Object();\n"
        + " return obj; /* single-line comment */\n"
        + "}";

System.out.println(sourceCode.replaceAll(
        "//.*|/\\*((.|\\n)(?!=*/))+\\*/", ""));

输入：

/*
 * Multi-line comment
 * Creates a new Object.
 */
public Object someFunction() {
    // single line comment
    Object obj =  new Object();
    return obj; /* single-line comment */
}

输出：

public Object someFunction() {

    Object obj =  new Object();
    return obj; 
}

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