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Whats wrong with this code

2 replies on 1 page. Most recent reply: Apr 23, 2003 3:02 AM by Adam Duffy

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Courtenay

Posts: 23
Nickname: courtz
Registered: Apr, 2003

Whats wrong with this code

Posted: Apr 22, 2003 1:03 PM

I get an following error with this code:

for(int k = 7999; k > 0; k--){
        randomNo = new Double((Math.random() * 5));
        list[7999] = new Double(20000.0);
        list[k-1] = new Double(list[k] - randomNo);

It has to be a double value.
The error is: operator - cannot be applied tojava.lang.Double,java.lang.Double

Can someone help

Singh M.

Posts: 154
Nickname: ms
Registered: Mar, 2002

Re: Whats wrong with this code

Posted: Apr 22, 2003 3:30 PM

That is because you have two objects of class java.lang.Double and you cannot perform a minus operation on objects. Convert them to primitive type (double) and you will be fine.

Adam Duffy

Posts: 168
Nickname: adamduffy
Registered: Feb, 2003

Re: Whats wrong with this code

Posted: Apr 23, 2003 3:02 AM

To follow up on Singh M.'s answer. You can use the doubleValue method.

For example,

list[k-1] = new Double(list[k].doubleValue() - randomNo.doubleValue());

Adam

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