public static void main ( String argc [ ] ) {
  int [ ] [ ] mat = new int [ ] [ ] {
    {
      4 , 7 , 0 , 3 }, {
        8 , 5 , 6 , 1 }, {
          9 , 11 , 10 , 2 }, {
            15 , 13 , 14 , 12 }
          };
          int n = 4 ;
          System . out . println ( "Total energy required = " + calculateEnergy ( mat , n ) + " units" ) ;
        }
        
public static void main ( String argc [ ] ) { int [ ] [ ] mat = new int [ ] [ ] { { 4 , 7 , 0 , 3 } , { 8 , 5 , 6 , 1 } , { 9 , 11 , 10 , 2 } , { 15 , 13 , 14 , 12 } } ; int n = 4 ; System . out . println ( " Total ▁ energy ▁ required ▁ = ▁ " + calculateEnergy ( mat , n ) + " ▁ units " ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier) dimensions: (dimensions))) body: (block (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions) value: (array_initializer (array_initializer (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal)) (array_initializer (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal)) (array_initializer (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal) (decimal_integer_literal)) (array_initializer (decimal_integer_literal) (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: (binary_expression left: (string_literal) right: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier)))) right: (string_literal)))))))