I have the following line in my code:
this.date = new Date(year, month, day);
But when I give, for example:
year = 2008
month = 1
day = 20
I get:
Thu Feb 20 00:00:00 BRT 3908
Or let's say:
year = 2008
month = 3
day = 9
I get:
Thu Apr 09 00:00:00 BRT 3908
Any ideas what's wrong?
You should read the JavaDoc about the constructor. The parameters are not simply what you think they are.
It says:
year- the year minus 1900; must be 0 to 8099. (Note that 8099 is 9999 minus 1900.)
month- 0 to 11
day- 1 to 31
However, as the Docs say as well, it is deprecated. Construct dates using a Calendar instead. Or use JodaTime.
The month is zero-based. So 0 is Jan and 1 is Feb, and so on.
try this
Date date= new Date();
SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd");
System.out.println(format.format(date));
LocalDate.of( 2008 , Month.JANUARY , 23 )
As others have said correctly, you assumed month numbers were 1-based counting. But in fact they are 0-based counting. One of the many problems with the java.util.Date/Calendar classes.
As a workaround, use the pre-defined constants rather than try to remember that ridiculous numbering scheme:
Better yet, get a real date-time framework: Use the JSR 310: Date and Time API classes built into Java 8+.
To represent a date-only value, use LocalDate class. In contrast to the legacy classes, java.time uses sane numbering. For months that is 1-12 for January-December.
LocalDate ld = LocalDate.of( 2008 , 1 , 23 ) ; // 1 = January.
Or use the nice Month enum.
LocalDate ld = LocalDate.of( 2008 , Month.JANUARY , 23 ) ;
