What to pay attention to when writing the first code

public class HelloWorld{

    public static void main (String [] args){

        System.out.println(" Welcome to my blog !");

}

This is the first code I typed , Don't forget to type the code, and there are other precautions

One .public static void main (string [] args) It is our Java Entry to the application

Two .public statia void main It can't be changed

3、 ... and .main Method parameters String []args There are several ways to write .String[]args,String args[],String[]a. These are also main Parameters of

Four .System.out.println This part is the output to the console

5、 ... and . One Java If there is... In the source file public Embellished class class , Then there is only one public Modified class , And the name of the source code should be the same as public The modified class name is consistent , Don't be different .

6、 ... and . One Java There can be more than one... In the source file class, without public Embellished class Class time , You don't have to care so much about its file name , In any one class Any name is OK .

7、 ... and . To write Java Code time , Every sentence of code should be written with ; To end .

8、 ... and . To write Java When coding, symbols must exist in pairs, such as {}

Well, the above is what you should pay attention to when typing the first code , Remember that some are not something you should pay attention to when you first type code, but something you need to remember in your later coding career .

That's all for today , Bye, everybody