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  1.  
  2. import java.io.Serializable;
  3. import java.time.LocalDateTime;
  4. import java.util.Comparator;
  5.  
  6. abstract class TLog<T> implements Serializable, Comparable<TLog> {
  7.  
  8.     private LocalDateTime moment;
  9.     private String origin;
  10.     private String type;
  11.     private TableName table; // This is a simple enum
  12.     private Comparator<TLog<?>> comparator = Comparator.comparing(TLog<?>::getMoment)
  13.         .thenComparing(TLog::getTable)
  14.         .thenComparing(TLog::getOrigin)
  15.         .thenComparing(TLog::getType);
  16.  
  17.     public TLog() {
  18.         // comparator initialization
  19.     }
  20.  
  21.     public LocalDateTime getMoment() {
  22.         return moment;
  23.     }
  24.  
  25.     public String getOrigin() {
  26.         return origin;
  27.     }
  28.  
  29.     public String getType() {
  30.         return type;
  31.     }
  32.  
  33.     public TableName getTable() {
  34.         return table;
  35.     }
  36.  
  37.     public Comparator<TLog<?>> getComparator() {
  38.         return comparator;
  39.     }
  40.  
  41.     @Override
  42.     public int compareTo(TLog other) {
  43.         return comparator.compare(this, other);
  44.     }
  45.  
  46.     enum TableName {}
  47. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
spoj: The program compiled successfully, but main class was not found.
      Main class should contain method: public static void main (String[] args).
stdout 
Standard output is empty
https://ideone.com/nS9kAC
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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