I am looking at a website to learn Java and this is one of the exercises.
Write a program that will show different time and date information based on what number you send it. The codes are:
0 - number of milliseconds since January 1, 1970
1 - number of seconds since January 1, 1970
2 - number of days since January 1, 1970
3 - current date and time
So if I type: java prob 2
I want to see: days since January 1, 1970: 10727
I started it and used a switch statement. I am pretty sure I need to use the Date class in some way but I do not know how to put it together. If someone can show me how to do one, that would be very helpful.
Probably best to save 0 for invalid. No need to create a string variable before parse to int. Best check how parse handles non numeric. Start by reading the methods of Date, avoiding the SQL Date. https://docs.oracle.com/javase/8/doc...util/Date.html
The one desired result is in the listed methods. Fill that in.
Well, in the land of int there are just leading bits that everyone ignores, no leading decimal zeroes.
Integer.parseInt() does not tolerate white space, just -\{0,1\}[0-9]\(1,n\} where the value must fit in 32 bits, signed. The value of n here is variable, as you can have leading zeroes in any quantity. Minus zero does not bother it, is just zero. Integer (Java Platform SE 6), int)
Last edited by DGPickett; 11-12-2014 at 04:32 PM..
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