This example should be accepted without error.

% javac C.java
C.java:17: Blank final variable 'o' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final Object o;
                        ^
1 error

//(company - UCAR , email - ###@###.###)
/*
 * Compiling produces the error message:
 * C.java:10: Blank final variable 'o' may not have
 * been initialized. It must be assigned a value in
 * an initializer, or in every constructor.
 */
public class C { // slight variation of Bug Id 4056774
  C() {
    o = null;
  }
  class R {
    void printo() {
      System.out.println(o);
    }
  }
  private final Object o;
}

william.maddox@Eng 1998-06-10


Name: skT88420 Date: 10/06/99


javac does not compile a valid java code.
It prints

 javac com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:47: Blank final variable 'LOOKUPINDEXESNAME' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final static Dictionary LOOKUPINDEXESNAME,LOOKUPINDEXESID,FUNCTIONSETS,TIMESERIES,ENTITIESWITHLOCALTIMESERIES;
                                                   ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:47: Blank final variable 'LOOKUPINDEXESID' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final static Dictionary LOOKUPINDEXESNAME,LOOKUPINDEXESID,FUNCTIONSETS,TIMESERIES,ENTITIESWITHLOCALTIMESERIES;
                                                                   ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:47: Blank final variable 'FUNCTIONSETS' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final static Dictionary LOOKUPINDEXESNAME,LOOKUPINDEXESID,FUNCTIONSETS,TIMESERIES,ENTITIESWITHLOCALTIMESERIES;
                                                                                ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:47: Blank final variable 'TIMESERIES' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final static Dictionary LOOKUPINDEXESNAME,LOOKUPINDEXESID,FUNCTIONSETS,TIMESERIES,ENTITIESWITHLOCALTIMESERIES;
                                                                                           ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:47: Blank final variable 'ENTITIESWITHLOCALTIMESERIES' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final static Dictionary LOOKUPINDEXESNAME,LOOKUPINDEXESID,FUNCTIONSETS,TIMESERIES,ENTITIESWITHLOCALTIMESERIES;
                                                                                                                       ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:123: Blank final variable 'TIMETOHOLDIDLE' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  static final long TIMETOHOLDIDLE;
                                  ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:126: Blank final variable 'PERIODTOCLEAR' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  static final long PERIODTOCLEAR;
                                 ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:129: Blank final variable 'MAXENTRIES' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  static final int MAXENTRIES;
                             ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:132: Blank final variable 'DELAYBEFORECLEANING' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  static final long DELAYBEFORECLEANING;
                                       ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:135: Blank final variable 'MAX_SIMULTANEOUS_CONNECTIONS' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  final static int MAX_SIMULTANEOUS_CONNECTIONS;
                                               ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:138: Blank final variable 'STARTINGTIME' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  final static long STARTINGTIME;
                                ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:141: Blank final variable 'HOURTOEXPIRE' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  final static long HOURTOEXPIRE;
                                ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:370: Blank final variable 'timeseriecache' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final Dictionary timeseriecache;
                                         ^
com/polytechnik/datainterface/SimpleDataReaderWithoutDatabase.java:371: Blank final variable 'dummydouble' may not have been initialized. It must be assigned a value in an initializer, or in every constructor.
  private final double [] dummydouble;
                                     ^
14 errors

The relevant part of the source is
(there is only one constructor).

  /** Timeserie Cache. */
  private final Dictionary timeseriecache;
  private final double [] dummydouble;
  // private final long [] dummylong;

  private SimpleDataReaderWithoutDatabase(long t_from,long t_to,long expiration_time)
    {
      super(t_from,t_to,expiration_time);
      this.timeseriecache=new Hashtable(200);
      this.dummydouble=new double [super.timepointsarray.length];
      // this.dummylong=new long [super.timepointsarray.length];
      for(int i=0;i<this.dummydouble.length;i++)
{
this.dummydouble[i]=Double.NaN;
// this.dummylong[i]=0L;
}
    }

and
 /** The time to hold the entries. */
  static final long TIMETOHOLDIDLE;

  /** How often to clear cache. */
  static final long PERIODTOCLEAR;

  /** Maximal number of entries in cache. */
  static final int MAXENTRIES;

  /** A delay before cleaning. */
  static final long DELAYBEFORECLEANING;

 /** Maximal number of simultaneously open connections. */
  final static int MAX_SIMULTANEOUS_CONNECTIONS;

  /** Starting time for historical data. */
  final static long STARTINGTIME;

  /** An hour when the reader is expired (currently 18:00). */
  final static long HOURTOEXPIRE;

where all these
fields are initialized inside
static {

}
clause.

It does not print this error if I try to extract just
the code of above.
I can send an original program
(it is pretty big, 120Kb) if requested.

Vladislav
(Review ID: 96066)
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