2 replies to this topic

[hetra]

Hello all,

I was watching a Java tutorial on YouTube about variable arithmetic. So I thought I'd make a simple programm to take two variables and do arithmetic on them. So I declare an int variable x. Then this happens:

I hover the mouse and it says "Local variable x is never read". What is this?

[B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]
[LEFT]public[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] [/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]class[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] Variable_Arithmetic {

[/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055][/COLOR][/SIZE][/COLOR][/SIZE][/B] 
[B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]         public[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] [/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]static[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] [/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]void[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] main(String[] args) {

[/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055][/COLOR][/SIZE][/COLOR][/SIZE][/B] 
[B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]                     int[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] [U]x[/U] = 10;


}

}[/LEFT]
[/SIZE]

I am using Eclipse for whatever it's worth.

Help would be great.

[wim DC]

It's just a 'warning' probably because you declare x. But you don't do anything useful with it. If below you say

System.out.println(x);

then it's most likely solved as eclipse notices that x is now used and useful in some way.

[hetra]

Oh Thanks