public static void main ( String [ ] args ) {
  int mat [ ] [ ] = {
    {
      5 , 6 , 1 , 7 }, {
        - 2 , 10 , 8 , - 1 }, {
          3 , - 7 , - 9 , 11 }, {
            12 , - 4 , 2 , 6 }
          };
          int n = 4 ;
          System . out . println ( "Maximum Sum = " + maxSum ( mat , n ) ) ;
        }
        
public static void main ( String [ ] args ) { int mat [ ] [ ] = { { 5 , 6 , 1 , 7 } , { - 2 , 10 , 8 , - 1 } , { 3 , - 7 , - 9 , 11 } , { 12 , - 4 , 2 , 6 } } ; int n = 4 ; System . out . println ( " Maximum ▁ Sum ▁ = ▁ " + maxSum ( mat , n ) ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_initializer (array_initializer (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal)) (array_initializer (unary_expression operand: (decimal_integer_literal)) (decimal_integer_literal) (decimal_integer_literal) (unary_expression operand: (decimal_integer_literal))) (array_initializer (decimal_integer_literal) (unary_expression operand: (decimal_integer_literal)) (unary_expression operand: (decimal_integer_literal)) (decimal_integer_literal)) (array_initializer (decimal_integer_literal) (unary_expression operand: (decimal_integer_literal)) (decimal_integer_literal) (decimal_integer_literal))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (string_literal) right: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier)))))))))