3 dot in parameter in Java

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Can someone explain the meaning of the 3 dots, that we always use in our main method in Java?

public static void main(String... args[]){
    // method body
}
Nov 21, 2018 in Java by misc.edu04
• 1,380 points
429 views

1 answer to this question.

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The "Three Dots" in java is called the Variable Arguments or varargs. It allows the method to accept zero or multiple arguments. Varargs are very helpful if you don't know how many arguments you will have to pass in the method.

For Example:

abc(); // Likely useless, but possible 
abc("x", "y", "z"); 
abc("xyz"); 
abc(new String[]{"x", "y", "z"});

But one thing you must not is, the argument that gets the ... must be the last in the method signature. In simpler terms, 

abc (int i, String... strings) is correct, whereas:

abc(String... strings, int i) is wrong.

answered Nov 21, 2018 by geek.erkami
• 2,320 points

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