1.5 issues

[Phaelax]

I've installed the new sdk and have already fixed any problems with deprecated methods. I'm getting another error though. In BlueJ, it says my class uses unchecked or unsafe operations. When I compile from the command prompt:

C:\>java d:\programming\java programs\jtunes2\MainFrame.java

Exception in thread "main" java.lang.NoClassDefFoundError: d:\programming\java


I get the same error on one other class as well, but everything else compiles fine.


Here's the other class that won't compile. It's simple, and I can't see what problems it would have.

import java.util.Vector;
import java.io.Serializable;


public class AlbumMix implements Serializable
{
    private String name;
    private Vector songs = new Vector();
    private double totalSize = 0.0;
    
    public AlbumMix(String n)
    {
        name = n;    
    }
    
    public AlbumMix()
    {
        name = "New Mix";
    }
    
    public void addSong(MP3 song)
    {
        songs.add(song);
    }
    
    public Vector getList()
    {
        return songs;
    }
    
    /*
     * Returns number of songs in album
     */
    public int getSize()
    {
        return songs.size();
    }

    public String toString()
    {
        return name;
    }
    
    public void addToTotalSize(double size)
    {
        totalSize += size;
    }
    
    public void subtractFromTotalSize(double size)
    {
        totalSize -= size;
    }
    
    /*
     * Returns the size of the album in Kbytes
     * Album size determined by all the file sizes that 
     * make up this album
     */
    public double getSizeKB()
    {
        return totalSize;
    }
}

[Phaelax]

Both classes use Vector. After looking at the documentation, 1.5 has changed it I think.

1.4
add(Object o)

1.5
add(E o)

I don't know what this "E" is or if it may be a bug in their documentation. But it just links me back to the Vector class when I click it.

[Phaelax]

It's the new Generic type stuff.

http://java.sun.com/developer/techni...2se15langfeat/

[Kram]

When you say that you type this:

C:\>java d:\programming\java programs\jtunes2\MainFrame.java

Do you mean this:

C:\>javac d:\programming\java programs\jtunes2\MainFrame.java

because that error means that it hasnt been compiled yet and you are trying to run the .java file rather than the .class file...

[Phaelax]

oops. you can tell i dont use the command line too often for java.