Thread: Storing radiobutton into file

ive been working on this for a while and have tried several alternatives and its getting late heh. I am having problems taking a radiobutton, and storing it as a string in a .csv file.

try{
		if(btn1.isSelected())
		{
			gender = "Male";
		}
		if(btn2.isSelected())
		{
			gender = "Female";
		}
	FileWriter writer = new FileWriter("Student.csv");
 
 
 
	writer.write(lbl1 + ", " + txt1.getText());	    
	writer.write('\n');
	writer.write(lbl1 + ", ");
 
	writer.write('\n');
	[B][U]writer.write(lbl3 + gender);[/U][/B]
	    writer.write('\n');
 
	    writer.write(lbl2 + ", " + txt2.getText());
 
	writer.close();
 
	} catch (Exception e){
 
	System.err.println("Error: " + e.getMessage());
 
	}

The main line i am interested in is the one underlined, every time i try to save it into a .csv file i get an error "null"

this is the other way i tried.

String choice = group.getSelection().getActionCommand();
try{
 
FileWriter writer = new FileWriter("Student.csv");
 
 
 
writer.write(lbl1 + ", " + txt1.getText());	    
 
    writer.write('\n');
 
    [B][U]writer.write(lbl7 + ", " + choice);[/U][/B]
 
    writer.write('\n');
 
    writer.write(lbl2 + ", " + txt2.getText());
 
writer.close();
 
} catch (Exception e){
 
System.err.println("Error: " + e.getMessage());
 
}

ignore all the other rubbish around it

Duplicate thread at java-forums.org