Jackson JSON Deserialization: array elements in each line

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If you don’t want to extend DefaultPrettyPrinter you can also just set the indentArraysWith property externally:

ObjectMapper objectMapper = new ObjectMapper();
objectMapper.enable(SerializationFeature.INDENT_OUTPUT);

DefaultPrettyPrinter prettyPrinter = new DefaultPrettyPrinter();
prettyPrinter.indentArraysWith(DefaultIndenter.SYSTEM_LINEFEED_INSTANCE);

String json = objectMapper.writer(prettyPrinter).writeValueAsString(object);

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