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Re: incompatiple types how to sort it, help pls
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Posted: Nov 25, 2004 12:14 AM
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Your have 2 essentional errors:
1.
alldrives[k] is a File object.
skipDrive(skdrive) delivers a String object.
== will never work this way.
To solve this problem, you have to compare the String with:
alldrives[k].getName()
or
alldrives[k].getPath()
Since getName and getPath will deliver a valid drive name and not just the drive letter, you will have to extract the drive letter from the String. substring (0,1) should do the job.
2.
String s1 = "abcd";
String s2 = "abcd";
boolean b = s1 == s2;
b will allways be false.
Why? s1==s2 compares the Object, not it's content. These are 2 different objetcs with the same content.
The solution is:
s1.equals(s2)
3. (not essential)
You should use the Java naming convention.
AllRoots[] should be called allRoots[], because it's not a class, but a variable.
4. Want to compare the drive letters directly?
Use the datatype char (not Character).
Since it is a primitive type (like int, double, float, boolean, ...) instead of an Object, the content get's compared.
How to?
File drive = ...;
char nameChar f.getPath().charAt(0);
Change your skipDrive Method to
public static char skipDrive
and return the char'A'
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