Java Coding Problems

Getting the Pair class fields

All the fields of a class are accessible via the Class.getDeclaredFields() method. This method returns an array of Field:

Field[] fields = clazz.getDeclaredFields();// final java.lang.Object modern.challenge.Pair.left// final java.lang.Object modern.challenge.Pair.rightSystem.out.println("Fields: " + Arrays.toString(fields));

For fetching the actual name of the fields, we can easily provide a helper method:

public static List<String> getFieldNames(Field[] fields) {  return Arrays.stream(fields)    .map(Field::getName)    .collect(Collectors.toList());}

Now, we only receive the names of the fields:

List<String> fieldsName = getFieldNames(fields);// left, rightSystem.out.println("Fields names: " + fieldsName);

Getting ...