input: Write a function that takes the Java code snippet provided and converts it to equivalent Python code. The function should accept the Java code as input, identify the main method to be converted, and return the corresponding Python code. The input and output should be in the format shown in the example.
  
  
  assert java_to_python("public class Foo {\n  public int foo( int a, int b ) {\n    return a + b;\n  }\n}") == "def foo(a, b):\\n return a + b"
  assert java_to_python("public class Bar {\n  public int bar( int x, int y ) {\n    return x * y;\n  }\n}") == "def bar(x, y):\\n return x * y"
  assert java_to_python("") == ""
  assert java_to_python("public class HelloWorld {\n  public static void main(String[] args) {\n    System.out.println(\"Hello, World!\");\n  }\n}") == "\\n".join(["def main(*args):", '    print("Hello, World!")'])
  
output: def java_to_python(java_code):
      if not java_code:
          return ""
      import re
      method_pattern = re.compile(r'public\s+(?:static\s+)?(?:[a-zA-Z]+\s+)?([a-zA-Z]+)\s+(\w+)\s*\(([^)]*)\)\s*\{([^}]*)\}')
      match = method_pattern.search(java_code)
      if match:
          return_type, method_name, params, body = match.groups()
          params = [p.strip().split()[-1] for p in params.split(',')] if params else []
          body = body.strip().replace('System.out.println', 'print').replace(';', '')
          return f"def {method_name}({', '.join(params)}):\n return {body}" if return_type != 'void' else f"def {method_name}({', '.join(params)}):\n {body}"
      return ""