More command line woes......

Question

ok - I have 2 copies of a very similar java class called FileStuff - one of them is part of a package called ch10_io the other is not.... I can run the one that is NOT part of the package by typing >java FileStuff. I cannot run the one that is part of the package.
here's the source for both.....
1st the one in the package:
package ch10_io;
import java.io.File;
import java.io.IOException;
import static java.lang.System.out;
public class FileStuff {
    public static void main(String args[]) throws IOException {
        out.print("File system roots: ");
        for (File root : File.listRoots()) {
            out.format("%s ", root);
        out.println();
        for (String fileName : args) {
            out.format("%n------%nnew File(%s)%n", fileName);
            File f = new File(fileName);
            out.format("toString(): %s%n", f);
            out.format("exists(): %b%n", f.exists());
            out.format("lastModified(): %tc%n", f.lastModified());
            out.format("isFile(): %b%n", f.isFile());
            out.format("isDirectory(): %b%n", f.isDirectory());
            out.format("isHidden(): %b%n", f.isHidden());
            out.format("canRead(): %b%n", f.canRead());
            out.format("canWrite(): %b%n", f.canWrite());
            out.format("canExecute(): %b%n", f.canExecute());
            out.format("isAbsolute(): %b%n", f.isAbsolute());
            out.format("length(): %d%n", f.length());
            out.format("getName(): %s%n", f.getName());
            out.format("getPath(): %s%n", f.getPath());
            out.format("getAbsolutePath(): %s%n", f.getAbsolutePath());
            out.format("getCanonicalPath(): %s%n", f.getCanonicalPath());
            out.format("getParent(): %s%n", f.getParent());
            out.format("toURI: %s%n", f.toURI());
}now the one that is not part of the package:
import java.io.File;
import java.io.IOException;
import static java.lang.System.out;
public class FileStuff {
    public static void main(String args[]) throws IOException {
        out.print("File system roots: ");
        for (File root : File.listRoots()) {
            out.format("%s ", root);
        out.println();
        for (String fileName : args) {
            out.format("%n------%nnew File(%s)%n", fileName);
            File f = new File(fileName);
            out.format("toString(): %s%n", f);
            out.format("exists(): %b%n", f.exists());
            out.format("lastModified(): %tc%n", f.lastModified());
            out.format("isFile(): %b%n", f.isFile());
            out.format("isDirectory(): %b%n", f.isDirectory());
            out.format("isHidden(): %b%n", f.isHidden());
            out.format("canRead(): %b%n", f.canRead());
            out.format("canWrite(): %b%n", f.canWrite());
            out.format("canExecute(): %b%n", f.canExecute());
            out.format("isAbsolute(): %b%n", f.isAbsolute());
            out.format("length(): %d%n", f.length());
            out.format("getName(): %s%n", f.getName());
            out.format("getPath(): %s%n", f.getPath());
            out.format("getAbsolutePath(): %s%n", f.getAbsolutePath());
            out.format("getCanonicalPath(): %s%n", f.getCanonicalPath());
            out.format("getParent(): %s%n", f.getParent());
            out.format("toURI: %s%n", f.toURI());
}I use the same command for each .... do I need to qualify the command for the first version by using the package name somehow?
when I try to run the packaged version I get the error:
Exception in thread "main" java.lang.NoClassDefFoundError: CH10_IO/ch10_io/FileS
tuff
Message was edited by:
thouse

Answer 1

do I need to qualify the command for the first version by using the package name
somehow?Yes.
When you do what flounder suggests you will have to specify the directory that the source file belongs to when you compile it. (Using some OS specific convention like / or \).
And when you run the program you will have to specify the name of the class. (Using the convention that Java likes: package-dot-name).
[Edit] > if I just type >java FileStuff it doesn't. Any ideas why that is?
As above. But, woe! "zero dukes available"!