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Java value conversion

Posted on 2004-09-12
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Last Modified: 2010-03-31
hi everyone,

lets say i got a double value (123.30) i wanna convert it into a Long value (1233000) where the last 4 digits represents the decimal value. issit possible?

thnx
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Question by:mooy
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6 Comments
 
LVL 92

Expert Comment

by:objects
ID: 12041090
try:


double d = 123.30;
DecimalFormat df = new DecimalFormat("0.0000");
String s = df.format(d);
long l = Long.parseLong(s);
0
 
LVL 6

Expert Comment

by:expertmb
ID: 12041142
objects,
the above code gives number format exception.

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LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 12041149
oops :) forgot to strip the decimal point out

double d = 123.30;
DecimalFormat df = new DecimalFormat("0.0000");
String s = df.format(d);
int dot = s.indexOf(".");
long l = Long.parseLong(s.substring(0, dot)+s.substring(dot+1));
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LVL 6

Expert Comment

by:expertmb
ID: 12041155
yup!!! thts correct now :)
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Author Comment

by:mooy
ID: 12050968
hmm.... this is the only way in getting round this?
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LVL 2

Expert Comment

by:bcsonka
ID: 12051044
I'm not sure but it looks as if you just want to move the decimal point 4 places to the right and then convert the resulting value to a long.  Is this what you're looking for?

double doubleVal = 123.30;
long longVal = (long) (doubleVal * 10000);

longVal should now be 1233000

I hope that helps.
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