input: from typing import Callable
  
  def port_java_code(java_code: str) -> Callable:
      """Ports a Java code snippet to Python 3.
      The input is expected to be a Java class definition or method.
      The output will be the equivalent Python function.
      
      >>> port_java_code('public class Foo { public int foo(int a, int b) { return a + b; } }')
      'def foo(a, b):\\n return a + b'
      """
    
output:     import re
  
      def parse_java_method(java_code: str) -> str:
          method_pattern = re.compile(r'public\s+\w+\s+(\w+)\s*\(([^)]*)\)\s*{([^}]*)}')
          match = method_pattern.search(java_code)
          if match:
              method_name = match.group(1)
              params = match.group(2).split(',')
              body = match.group(3).strip()
  
              param_list = []
              for param in params:
                  param = param.strip().split()
                  if len(param) == 2:
                      param_list.append(param[1])
  
              param_str = ', '.join(param_list)
              return f"def {method_name}({param_str}):\n return {body}"
          return ""
  
      return parse_java_method(java_code)