input: 
  def port_java_to_python(java_code: str) -> str:
      """
      Port a Java code snippet to Python 3.
      >>> port_java_to_python('public class Foo { public int foo( int a, int b ) { return a + b; } }')
      'def foo(a, b): return a + b'
      >>> port_java_to_python('public class Bar { public int bar( int x ) { return x * x; } }')
      'def bar(x): return x * x'
      """
  
output:     import re
      
      # Remove class declaration and method signature
      java_code = re.sub(r'public class \w+ { public \w+ \w+\(.*\) {', '', java_code)
      java_code = re.sub(r'}', '', java_code)
      
      # Replace Java types with Python types
      java_code = re.sub(r'int ', '', java_code)
      
      # Replace Java return statement with Python return statement
      java_code = re.sub(r'return ', 'return ', java_code)
      
      # Remove extra spaces and newlines
      java_code = re.sub(r'\s+', ' ', java_code).strip()
      
      # Add Python function definition
      method_name = re.search(r'public \w+ (\w+)\(', java_code).group(1)
      parameters = re.search(r'\((.*?)\)', java_code).group(1)
      parameters = parameters.replace(' ', '')
      parameters = parameters.split(',')
      parameters = ', '.join(parameters)
      
      python_code = f'def {method_name}({parameters}): {java_code}'
      
      return python_code