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Thread: Type mismatch: cannot convert from void to ClassX.MethodX

  1. #1
    Junior Member
    Join Date
    Mar 2012
    Thanked 0 Times in 0 Posts

    Default Type mismatch: cannot convert from void to ClassX.MethodX

    Trying to populate the Trans[] array with the methods in my transistor database (TransDBEE) and am getting the error as described in the title. Any suggestions would be much appreciated

    Class 1
    package TransistorBiasing;

    import javax.swing.JList; //creates a list box for your JFrame
    import TransistorBiasing.TransDBEE;

    public class UseDB extends JFrame
    private JList TransJList;

    private final String TransNames[]={ "TIP120"};//an array of strings
    private final TransDBEE Trans[]={TransDBEE.tip120()}; //HERE IS THE ISSUE LINE

    public static void main( String args[])

    Class 2
    package TransistorBiasing;

    class TransDBEE
    public static int hfe;
    public static int VBE;
    public static int Icmax;

    //static void tip120(int hfe, int Icmax, int VBE)
    //static int tip120(hfe, Icmax, VBE)
    static void tip120()

  2. #2
    Join Date
    Jan 2012
    Thanked 59 Times in 57 Posts

    Default Re: Type mismatch: cannot convert from void to ClassX.MethodX

    Hello RevMoses77,
    Your Trans[] array is of type TransDBEE so it should be assigned with a TransDBEE variable (for example an instance of the TransDBEE class). You tip120() method is void (returns nothing) that's why you get this error.

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