Java Beginner A

1. Case-sensitive

public static void main String args[] is a method in the class body, followed by two curly braces and between the contents of the method body, a Java application must have a class and only one class contains such a Main method, which is called the main class of the application ，

public static and void are descriptions of the main method respectively.

String args "" declares an array of string types args "" Note that the first letter of the string is uppercase,

2, compile Javac Hello.java

3. Java Hello

4.

Java Beginner A