Thread: JTextField

I'm working with a JTextField, and JRadioButtons. I want to know how to make the GUI update every time I enter new text into the text field. Below is the main function in my event handling portion of my code. All the buttons update every time the are clicked, but when a new temp is entered the output will only update when a new button is clicked. Any help is welcome, thanks.

public void itemStateChanged(ItemEvent UserEvent)
		{
			userInput = String.format("%s", Input.getText());
 
			if(userInput.isEmpty() == true)
			{
				Output.setText(String.format("No input."));
			}
 
			else if(isNumeric(userInput) == false)
			{
				Output.setText(String.format("No input."));
			}
 
			else
			{
				temperature = Double.parseDouble(userInput);
				System.out.print(userInput);
 
 
 
				if(userInput.isEmpty() == false && isNumeric(userInput) == true)
				{
					if(Celsius1.isSelected())
					{
 
						if(Celsius2.isSelected())
						{
							Output.setText(String.format("%6.2f \u2103", temperature));
						}
 
						else if(Fahrenheit2.isSelected())
						{
							newTemp = (temperature * 1.8) + 32;
							Output.setText(String.format("%6.2f \u2109", newTemp));
						}
 
						else if(Kelvin2.isSelected())
						{
							newTemp = temperature + 273.15;
							Output.setText(String.format("%6.2f \u00B0" + "K", newTemp));
						}
					}
 
 
 
					else if(Fahrenheit1.isSelected())
					{
						if(Celsius2.isSelected())
						{
							newTemp =  (temperature - 32)/ 1.8;
							Output.setText(String.format("%6.2f \u2103", newTemp));
						}
 
						else if(Fahrenheit2.isSelected())
						{
							Output.setText(String.format("%6.2f \u2109", temperature));
						}
 
						else if(Kelvin2.isSelected())
						{
							newTemp = (temperature + 459.67)/ 1.8;
							Output.setText(String.format("%6.2f \u00B0" + "K", newTemp));
						}
					}
 
					else if(Kelvin1.isSelected())
					{
						if(Celsius2.isSelected())
						{
							newTemp = temperature - 273.15;
							Output.setText(String.format("%6.2f \u2103", newTemp));
						}
 
						else if(Fahrenheit2.isSelected())
						{
							newTemp = (temperature * 1.8) - 459.67;
							Output.setText(String.format("%6.2f \u2109", newTemp));
						}
 
						else if(Kelvin2.isSelected())
						{
							Output.setText(String.format("%6.2f \u00B0" + "K", temperature));
						}
					}
					else if (keyIsPressed == false)
					{
						Output.setText(String.format("No input."));
					}
				}
				else
				{
					Output.setText(String.format("No input."));
				}
			}	
		}
	}//End of Input UserEvent

Thanks, I need to turn this in tonight so I may not get the document listener implemented by tonight. I was hoping there might be a quick fix with the way I have it implemented now.