java beginner "Hello World" -

i trying learn java

i dont understand why code won't work.

it won't output "hello world" test() function.

what doing wrong?

public class main {      public test(args) {         system.out.println(args);     }      public static void main(string[] args) {         test('hello world');     } } 

firstly:

public test(args) {     system.out.println(args); } 

you need type go parameter - java typed language , need specify type. type here, system.out.println() can take anything, set type string, object or whatever (since object has tostring() method , has lots of overloads deal primitives.) bear in mind unusual though, of methods come across take of specific type!

since you're calling test main method here, , you're passing string it, may set type of args string.

the second problem there's no return type specified. need specify return type, in case nothing returned type void. if don't compiler has no way of knowing whether wrote meant method or constructor.

the third problem test instance method you're calling statically. test() needs static well, otherwise belongs instances of main , not main class. why matter? well, there potentially thousands of instances of main, instance should method run on? compiler has no way of knowing.

next:

public static void main(string[] args) {     test('hello world'); } 

you're passing string here, needs in double quotes. java treats quotes differently php, single quotes used single character literals , double quotes used strings. can never enclose string in single quotes this, has double.

putting together:

public class main {      public static void test(string args) { //add return type , parameter type, make test static         system.out.println(args);     }      public static void main(string[] args) {         test("hello world"); //change single quotes double quotes     } }