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java program execution - Coggle Diagram

- - - - pass it a single argument - String[]
- - - - ClassLoader
      - sub-class of ClassLoader
    - - JVM tries to find binary representation of specified class
        
        JVM uses a class loader to find such representation
        
        the binary file is created by java compiler
        
        the format of a class file is specified by JVM specification
        
        or create such file on the fly
      - JVM creates a class object from that binary file
        
        ClassLoader#defineClass may be used to construct class object from the class file format
  - - - checks
        
        loaded binary is well-formated
        
        the code obes the semantic requirement of java language and JVM
    - - involves
        
        allocation of static resources and any data structure used internally by JVM
        
        example: method table
    - - resolution of references between classes
      - before a symbolic reference can be used, it must undergo resolution step
      - this depends of implementation of JVM
      - an implementation can choose to do resolution when a symbolic reference is used rather than during linkage time
      - errors
        
        IllegalAccessError
        
        InstantiationError
        
        NoSuchFieldError
        
        NoSuchMethodError