小编use*_*240的帖子

我试图用空字符串""替换字符串中的",".我相信以下代码是正确的,但是当我使用Eclipse运行它时.它不起作用.我的代码有什么问题,我应该如何纠正它

String fullName = "lastname, firstname", lastName, firstName;

    String[] parts = fullName.split(" ");
    String firstPart = parts[0];
    String secondPart = parts[1];

    if (firstPart.contains(",")) {
        firstPart.replace(",", "");
        firstPart.trim();
        secondPart.trim();
        lastName = firstPart;
        firstName = secondPart;  }