Non-static method ... cannot be referenced from a static context

[MikeB1955]

Hello,

Let me preface this by saying that I know very little about Java and the J2ME but I have been a programmer for over 20 years (assemblers and 'C') so I am not untechnical.

I hope someone can help me with a problem that I am constantly running into. I am trying to learn Java and the J2ME and write my first applet but I am constantly running into a problem that says "Non-static method such-and-such(stuff) cannot be referenced from a static context.

1. What exactly does this mean?

2. How do I get around this problem.

Here is a short example...

------------------------------------

package MyMidlet;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class MyMidlet extends MIDlet implements CommandListener {

    private midletLog log = new midletLog();
    private myClass mine = new myClass();
    private Command exitCommand;
    private Display display;

    public WorkScheduleMIDlet() {
        display = Display.getDisplay(this);
        exitCommand = new Command("Exit", Command.EXIT, 0);
    }

    public void startApp() {
        mine(log, "Creating textbox...");
        TextBox t = new TextBox("My Midlet", "Sample textbox", 256, 0);
        t.addCommand(exitCommand);
        t.setCommandListener(this);

        display.setCurrent(t);
        log.show(display);
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

    public void commandAction(Command c, Displayable s) {
        if (c == exitCommand) {
            destroyApp(false);
            notifyDestroyed();
        } 
    }
}

------------------------------------

package MyMidlet;

public class MyClass {
    public  String myData;

    public  MyClass() {
        myData = ""
        return;
    }

    public void myFunc(midletLog log, String text) {
        log.append(text);
        return;
    }
}

------------------------------------

package MyMidlet;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class midletLog implements CommandListener {
    private Form mainForm;
    private Command exitCommand;

    public  midletLog() {
        mainForm = new Form("2BS Work Schedule Log");
        exitCommand = new Command("Back", Command.BACK, 1);
        mainForm.addCommand(exitCommand);
        mainForm.setCommandListener(this);
        return;
    }

    public void append(String textLine) {
        mainForm.append(textLine + "\n");
        return;
    }


    public  void show(Display display) {
        display.setCurrent(mainForm);
        return;
    }


    public void commandAction(Command c, Displayable s) {
        if (c == exitCommand) {
		<unimportant code>
        }
    }
}

------------------------------------

One another note, where can I load a Java JDK 7 Class/API reference and a J2ME 3 Class/API reference (either .chm or .pdf)?


Thanks,

MikeB

[pbrockway2]

Welcome!

When you post code, use the "code" tags: put [code] at the start of the code and [/code] at the end. This will keep the code readable. (It also makes things more legible if you keep to standard Java coding conventions: variables, methods and packages all start with a lower case letter, and classes with an uppercase one. This will also mean there can be no confusion between a the class and the package both of which you call "MyMidlet".)

Could you post the actual compiler messages? (and say which lines of your code they refer to)