求解一个Java 基础问题！

Question

 List<String> list = new ArrayList<String>();

list的数据

 [615, FAULT_SYMPTOM, 1, 615, FAULT_SYMPTOM, 663, 615, FAULT_SYMPTOM, 821, 615, FAULT_SYMPTOM, 1160, 615, FAULT_SYMPTOM, 1161, 615, FAULT_SYMPTOM, 1162, 615, FAULT_SYMPTOM, 1220, 615, FAULT_SYMPTOM, 1241, 615, FAULT_SYMPTOM, 722, 615, FAULT_SYMPTOM, 880, 813, FAULT_SYMPTOM, 1, 813, FAULT_SYMPTOM, 663, 813, FAULT_SYMPTOM, 821, 813, FAULT_SYMPTOM, 1160, 813, FAULT_SYMPTOM, 1161, 813, FAULT_SYMPTOM, 1162, 813, FAULT_SYMPTOM, 1220, 813, FAULT_SYMPTOM, 1241, 813, FAULT_SYMPTOM, 722, 813, FAULT_SYMPTOM, 880, 834, FAULT_SYMPTOM, 1, 834, FAULT_SYMPTOM, 663, 834, FAULT_SYMPTOM, 821, 834, FAULT_SYMPTOM, 1160, 834, FAULT_SYMPTOM, 1161, 834, FAULT_SYMPTOM, 1162, 834, FAULT_SYMPTOM, 1220, 834, FAULT_SYMPTOM, 1241, 834, FAULT_SYMPTOM, 722, 834, FAULT_SYMPTOM, 880]

想把这数据转成下面类似的格式，就是3个一行的

 615, FAULT_SYMPTOM, 1
 615, FAULT_SYMPTOM, 663
 ......

求解决方法，谢谢！（基础不好，勿喷！）

Answer 1

你问题都不清楚，只是转成换行显示（每三个添加一个换行符）？还是？