private void check(){
  boolean star=types == null;
  int len=name.length();
  if (len == 0) {
    throw new IllegalArgumentException("method name cannot be empty");
  }
  char c=name.charAt(0);
  if (!Character.isJavaIdentifierStart(c) && !(star && c == '*' && len > 1)) {
    throw new IllegalArgumentException("invalid method name");
  }
  if (star && c != '*' && name.charAt(len - 1) == '*') {
    len--;
  }
  while (--len >= 1) {
    if (!Character.isJavaIdentifierPart(name.charAt(len))) {
      throw new IllegalArgumentException("invalid method name");
    }
  }
  if (types != null) {
    for (int i=types.length; --i >= 0; ) {
      if (types[i] == null) {
        throw new NullPointerException("class cannot be null");
      }
    }
  }
}

private void check ( ) { boolean star = types == null ; int len = name . length ( ) ; if ( len == 0 ) { throw new IllegalArgumentException ( "method name cannot be empty" ) ; } char c = name . charAt ( 0 ) ; if ( ! Character . isJavaIdentifierStart ( c ) && ! ( star && c == '*' && len > 1 ) ) { throw new IllegalArgumentException ( "invalid method name" ) ; } if ( star && c != '*' && name . charAt ( len - 1 ) == '*' ) { len -- ; } while ( -- len >= 1 ) { if ( ! Character . isJavaIdentifierPart ( name . charAt ( len ) ) ) { throw new IllegalArgumentException ( "invalid method name" ) ; } } if ( types != null ) { for ( int i = types . length ; -- i >= 0 ; ) { if ( types [ i ] == null ) { throw new NullPointerException ( "class cannot be null" ) ; } } } }
verifies that the name is a syntactically valid method name , or ( if types is null ) if the name is a syntactically valid method name with a ' * ' appended or could be constructed from some syntactically valid method name containing more than two characters by replacing the first character of that name with ' * ' , and verifies that none of the elements of types are null .
