Java main function

Main function

• Role:
  the starting point of running, the main function enables the class to run independently
• Features:

  • There is no main function, it can be compiled, but it cannot be run

  • A class with a main function is called a driver class

  • The format must be:

      public static void main(String[] args){
            
             }
    

    • public: because it must be called by an external function
    • static: the implementation can be called without creating an object
    • void: did not receive the value of the return parameter
    • String[] String array type parameter (JVM passes a string type array to the main function, but the array length is 0)
      String is the most common data type, it can be converted into other types of data

references

https://www.cnblogs.com/huanmin/p/6429778.html Why is the main function format public static void main(String[] args){}