Java study notes-the usage of...

I recently found that the code in a project has the following usage

public static void checkResponseStatus(HttpResponse.RespModel response, boolean success, String...msg) {
        String template = "xxxx";
        Assert.assertEquals(!response.isHasError(), success, realMsg);
    }

One of the input parameters is String...msg.

 

After consulting, this is a new way of writing in Java.

…Is a new way of writing method parameters supported by the Java language, called variable-length parameter list. The syntax is type followed by …, which means that the parameters accepted here are 0 or more objects of type Object, or an Object[].

The test code is as follows:

public class main {
    public static void main(String[] args)  {

        myTest("aaa","bbb");
        myTest("aaa","bbb","ccc","ddd");

    }

    public static void myTest(String str1 ,String... strs){
        for(String str : strs){
            System.out.println(str);
        }
        System.out.println(str1);
    }

}

The console output is as follows: