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Main.java:14: cannot find symbol
symbol : method toUpperCase()
location: class java.io.File
System.out.println(file.toUpperCase());
^...

Here's my errors.. :D

line 14 - cannot find symbol method toUpperCase()
line 28 - cannot find symbol method Stringbuilder(java.io.*)

And a question as to how FileReader basically works.. I...

I gotta be honest, it's getting very hard for me to understand the lectures of my professor. I ask questions but I rarely get the answer I'm looking for. This time, he gave us an assignment about...

Great! Thanks, j2me64! :-bd

Wow! Thanks a lot for the help, guys! That was quite enlightening! :)) :D

So to be clear, the class variable can be used by all methods, but the instance variable can only be used by the method it...

Here is the code:



import java.io.*;

class Change
{
double cost;
double tax;