Line 1 is to specify the type of the class named class, which usually is a kind of class that the public will be able to use this class.And here is the ongkhla, which we can name chuek anywhere, as her program.
Line 1 is the type of class, and the class name, which is a type of class will be the public who will be able to use this class and later the name of the class, which we can name it whatever the program is. allow
The line 1 is to specify the type of class and naming the class which usual types of class will be the publicซึ่ง could use this class have , and later คือชื of class which we can name any way the program's permission.