Java Project on Electronic Components Value Calculator

This application has been created for completion of CS50x a course run by Harvard University under the Guidance of Dr. David J. Malan and Dr. Brain Yu.
This project mainly focuses on the measurement of the values the Resistance & Inductance based on their colour codes decided by the SI system and imprinted on them by the manufacturer thus by using a JCombo box I have given the user various to choose from the colours imprinted on them.
By selecting the correct option in the menu we can choose appropriate colours of the bands present on the on the Resistor or Inductor for the measurement of their values.
Similarly, for Ceramic Capacitors certain numerical values for their identification are imprinted on them by the manufacturer thus by inputting the appropriate numerical code we can calculate the capacitance of the capacitor using switch case statements.
While making of this project I have used Java eclipse IDE and in which a Windowbuilder plugin is used for creation of GUI. Also simple java codes like JFrame, JTextField, JTextArea, JRadioButton, JPasswordField, JOptionPane.
Also some methods like getText(); append();String.Format(); Math.Pow(); were also used in the building of the Project.
An Additional Component of billing is also provided in this Project which is A Simple Calculator in which the rates of the items are already coded and by entering the quantity of components total amount of the bill can be calculated.