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Why do I write "String" instead of "int" after "public static void" even if I just add some integer in a code?

Public class confused { Public static void (String[] args) { /*This "String" here*/ int x = 5; int y = 6; system.out.println(x + y); } }

11th Mar 2017, 8:53 PM
Ricc Weltenbummler
Ricc Weltenbummler - avatar
4 odpowiedzi
+ 3
for eg: public static void doAdd(int a, int b){ int c= a+b; //or do int c=3+5; } In above code^^^ a and b are called arguments ..when we call the method we pass the value of a & b. Similarly, Java code starts running from main(string[] args) here string[] args... indicates that argument or input of method is "array of strings " (int[] will indicate array of int) and variable name of argument is args... So now, If (only if not compulsion) you can use that variable like String fullName = args[0]+ args[1]; It doesn't matter if you don't use it... to use or not use is totally up to you I hope it's clear ...
11th Mar 2017, 9:50 PM
Pankaj Vaghela
Pankaj Vaghela - avatar
+ 2
ADDED TO @VEdward's answer.Here is a clear example, Consider a method named add, used to add 2 integers, public static void add(int a , int b){ System.out.print(a+b);} Hence when you call this method using, add(5,7); output is 12 ,printed on console.THIS is only possible if I use integer parameters (or arguments) NOTE:- 5and 7 are parameters. if I add doubles, add(3.4,5.5); this would show error, as there is no method named add that takes double parametes.
12th Mar 2017, 5:07 AM
Meharban Singh
Meharban Singh - avatar
+ 1
Forgot "main". String is for parameter, you can run your programme​ with.(eg java myjar.jar -bla bla)It is just the way, how software works and Java is a language, that forces you to write your code more strict formatted as it would be the case with js/c/c++.
11th Mar 2017, 8:59 PM
spotbot2k
spotbot2k - avatar
0
Thanks. This helped a lot :)
12th Mar 2017, 1:10 AM
Ricc Weltenbummler
Ricc Weltenbummler - avatar