JavaRefactor.java

// private static String MATRIX_NON_NULL_AND_ACTIVE_NON_NULL = "matrix non null and active non null";
// private static String MATRIX_NULL_AND_ACTIVE_NON_NULL = "matrix null and active non null";
// private static String MATRIX_NULL_AND_ACTIVE_NULL = "matrix null and active null";
// private static String EXCEPTION = "Add a value for active or leave empty matrix too";
 
// public String searchForUserAndRole(String matrix, String active) {
//     String response = "";
 
//     if (matrix != null && active != null) {
//         response = MATRIX_NON_NULL_AND_ACTIVE_NON_NULL;
//     } else if (matrix == null && active != null) {
//         response = MATRIX_NULL_AND_ACTIVE_NON_NULL;
//     } else if (matrix == null && active == null) {
//         response = MATRIX_NULL_AND_ACTIVE_NULL;
//     } else {
//         throw new RuntimeException(EXCEPTION);
//     }
 
//     return response;
// }
private static String EXCEPTION = "Add a value for active or leave empty matrix too";
private static String MATRIX_NULL_TEXT = "matrix null";
private static String MATRIX_NON_NULL_TEXT = "matrix non null";
private static String ACTIVE_NULL_TEXT = "active null";
private static String ACTIVE_NON_NULL_TEXT = "active non null";

public String searchForUserAndRole(String matrix, String active) {
    Boolean isActiveNotNull = active != null;
    Boolean isMatrixNotNull = matrix != null;

    if (isMatrixNull && !isActiveNotNull) throw new RuntimeException(EXCEPTION);

    String matrixText = isMatrixNotNull ? MATRIX_NON_NULL_TEXT : MATRIX_NULL_TEXT;
    String activeText = isActiveNotNull ? ACTIVE_NON_NULL_TEXT : ACTIVE_NULL_TEXT;

    String response = matrixText + " and " + activeText;

    return response;
}