toString

[Timo Lumme]

hi
im confused with toString methods
i fetch data int type and need converted on fly to string to the gui

    

public class LottoData implements java.io.Serializable 
{
	private int LottoMaxID; 
	
	LottoData() {}
	
	LottoData(int LottoMaxID)
	{
		this.LottoMaxID = LottoMaxID;
	}
	
	public void setMaxID(int s)	{LottoMaxID = s;}
	
	public int getMaxID(int  s)	
	{
		LottoMaxID = s;
		String str  = Integer.toString(LottoMaxID); //how return data from int to String? 
		//error: incompatible types  
		return str;
	}
	
	
	public String toString()
	{
		return ""+LottoMaxID; 
	}
	
/*	public static void main(String args[])
	{
		LottoData LD = new LottoData("8"); 
		
		System.out.println("LottoData MaxID: "+LD);
	}*/
}

[W Pearce]

Really all you have to do here is change the return type in the signature of getMaxID to String HOWEVER if you want to comply with javabeans standards, your method signature should really be public int getMaxID() with no arguments, you can rely on your setMaxID(int s) method to set the value. You should just call your toString() method from your GUI - that will return your LottoMaxID represented as a String object the way you have coded it here.

[Timo Lumme]

good but i get when trying it
i get error int cannot be dereferenced

LG.button4.setText(LD.getMaxID().toString());

this so simple stuff but manage to screw anyway, arrgh ..

[W Pearce]

try changing LG.button4.setText(LD.getMaxID().toString()); to LG.button4.setText(LD.toString());

[John de Michele]

Timo:

In java, primitives are not objects. This line is causing the problem:

LG.button4.setText(LD.getMaxID().toString());

Your getMaxID() method returns an int, which is a primitive. If you want to convert it to a String, try this:

LG.button4.setText(Integer.toString(LD.getMaxID()));

Note, I'm using the Integer class, which is different from an int primitive.

John.

[Timo Lumme]

Big Thank You
(i wish i would have your java brains/knowledge.)