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  1. import java.util.*;
  2. import java.io.*;
  3.  
  4.  
  5. class Data{
  6. 	String code;
  7. 	String name;
  8. 	Integer price;
  9.  
  10. 	int maxCodeLength;
  11. 	int maxNameLength;
  12. 	int maxPriceLength;
  13.  
  14. 	int zenkaku;
  15. 	int hankaku;
  16.  
  17. 	final String undefStr = "未設定";
  18. 	int undefStrLen;
  19.  
  20. 	Data(String code, String name, Integer price){
  21. 		this.code = code;
  22. 		this.name = name;
  23. 		this.price = price;
  24.  
  25. 		this.undefStrLen = method2(undefStr);
  26. 	}
  27. 	public int codeLength(){
  28. 		return price == null ? undefStrLen : method2(code);
  29. 	}
  30. 	public int nameLength(){
  31. 		return name == null ? undefStrLen : method2(name);
  32. 	}
  33. 	public int priceLength(){
  34. 		return price == null ? undefStrLen : price.toString().length();
  35. 	}
  36. 	public String toString(){
  37. 		String spaceCode = code == null ? getSpace(maxCodeLength, method2(undefStr)) : getSpace(maxCodeLength, method2(code));
  38. 		String spaceName = name == null ? getSpace(maxNameLength, method2(undefStr)) : getSpace(maxNameLength, method2(name));
  39. 		return code+spaceCode+" "+name+spaceName+" "+getStrInt(price, maxPriceLength);
  40. 	}
  41. 	private String getStrInt(Integer value, int max){
  42. 		final String fmt = "%"+max+"d";
  43. 		return price == null ? getSpace(undefStrLen, max)+undefStr : String.format(fmt, price);
  44. 	}
  45. 	private String getSpace(int max, int len){
  46. 		String space = "";
  47. 		for(int i=0; i<max-len; i++){
  48. 			space += " ";
  49. 		}
  50. 		return space;
  51. 	}
  52. 	public void setMaxCodeLength(int value){
  53. 		maxCodeLength = value;
  54. 	}
  55. 	public void setMaxNameLength(int value){
  56. 		maxNameLength = value;
  57. 	}
  58. 	public void setMaxPriceLength(int value){
  59. 		maxPriceLength = value;
  60. 	}
  61. 	public int method2(String s) {//コマンドライン上での文字列の見映えの長さ。コマンドライン上で見えている文字列の長さ。見えている長さ。見た時の長さ。
  62. 		// Javaで全角・半角の判定 - のらくら備忘録
  63. 		// http://k...content-available-to-author-only...2.com/blog-entry-111.html
  64.  
  65. 		int length = 0;
  66. 		zenkaku = 0;
  67. 		hankaku = 0;
  68.  
  69. 		char[] chars = s.toCharArray();
  70. 		for (int i = 0; i < chars.length; i++) {
  71. 			char c = chars[i];
  72. 			if ((c <= '\u007e') || // 英数字
  73. 					(c == '\u00a5') || // \記号
  74. 					(c == '\u203e') || // ~記号
  75. 					(c >= '\uff61' && c <= '\uff9f') // 半角カナ
  76. 			) {
  77. 				//System.out.print("半");
  78. 				hankaku++;
  79. 			} else {
  80. 				//System.out.print("全");
  81. 				zenkaku++;
  82. 			}
  83. 		}
  84. 		return hankaku + zenkaku*2;
  85. 	}
  86. }
  87. class CsvOrm{
  88. 	public static void main(String[] args){
  89. 		String fileName = "商品一覧.csv";
  90. 		BufferedReader br = null;
  91. 		ArrayList<Data> data = new ArrayList<>();
  92.  
  93. 		try{
  94. 			File file = new File(fileName);
  95. 			br = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));
  96. 			String line;
  97. 			while((line = br.readLine()) != null){
  98. 				//System.out.println("check:"+line);//check, ok
  99. 				//ArrayList<String> temp = line.split(",");
  100. 				String[] temp = line.split(",");
  101. 				//System.out.println("len:"+temp.length);//check, ok
  102.  
  103. 				final Integer price = temp.length == 2 ? null : Integer.parseInt(temp[2]);//末尾のpriceが欠損してる場合。
  104. 				data.add(new Data(func(temp[0]), func(temp[1]), price));
  105. 			}
  106. 		}catch(Exception e){
  107. 			System.out.println(e.getMessage());
  108. 		}finally{
  109. 			try{
  110. 				br.close();
  111. 			}catch (Exception e){
  112. 				System.out.println(e.getMessage());
  113. 			}
  114. 		}
  115.  
  116. 		adjust(data);
  117. 		show(data);
  118. 	}
  119. 	public static void adjust(ArrayList<Data> data){
  120. 		final Comparator<Data> cmpCodeLen = (s1, s2) -> Integer.compare(s1.codeLength(), s2.codeLength());
  121. 		final Comparator<Data> cmpNameLen = (s1, s2) -> Integer.compare(s1.nameLength(), s2.nameLength());
  122. 		final Comparator<Data> cmpPriceLen = (s1, s2) -> Integer.compare(s1.priceLength(), s2.priceLength());
  123.  
  124. 		Optional<Data> maxCodeData = data.stream().max(cmpCodeLen);
  125. 		Optional<Data> maxNameData = data.stream().max(cmpNameLen);
  126. 		Optional<Data> maxPriceData = data.stream().max(cmpPriceLen);
  127.  
  128. 		final int maxCodeLength = maxCodeData.get().codeLength();
  129. 		final int maxNameLength = maxNameData.get().nameLength();
  130. 		final int maxPriceLength = maxCodeData.get().priceLength();
  131.  
  132. 		System.out.println("maxCodeLength :"+maxCodeLength);
  133. 		System.out.println("maxNameLength :"+maxNameLength);
  134. 		System.out.println("maxPriceLength:"+maxPriceLength);
  135.  
  136. 		for(Data d: data){
  137. 			d.setMaxCodeLength(maxCodeLength);
  138. 			d.setMaxNameLength(maxNameLength);
  139. 			d.setMaxPriceLength(maxPriceLength);
  140. 		}
  141. 	}
  142. 	public static void show(ArrayList<Data> data){
  143. 		for(Data d: data){
  144. 			System.out.println(d);
  145. 		}
  146. 	}
  147. 	public static String func(String data){
  148. 		if(data.isEmpty()){
  149. 			return "未設定";
  150. 		}
  151. 		if(data == null){
  152. 			return "null";
  153. 		}
  154. 		return data;
  155. 	}
  156. }
  157.  
Runtime error #stdin #stdout #stderr 0.1s 48096KB
comments (?)
stdin 
Standard input is empty
stdout 
商品一覧.csv (No such file or directory)
null
stderr 
Exception in thread "main" java.util.NoSuchElementException: No value present
	at java.base/java.util.Optional.get(Optional.java:148)
	at CsvOrm.adjust(Main.java:128)
	at CsvOrm.main(Main.java:116)
https://ideone.com/W9Zmm4
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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