ConverterFrame
MetricConverter (combobox-ItemListener, textfield-KeyListener, button-ActionListener)
-TemperatureConverter
-LengthConverter
-WeightConverter
-VolumeConverter
Temperature Converter
-화씨 (Fahrenheit) 섭씨 (Celsius) 변환기
-JLabel, JTextbox, JButton, JImageIcon, KeyListener, ActionListener