Code Completion 11.105 Combo box with functions
Complete this function calculator so that it can compute the functions abs, sqrt, and log10. When the user selects a function name in the combo box, update the output label.
Here is a sample program output:
Complete the following code:
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JComboBox;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class CalcFrame extends JFrame
{
private JTextField input;
private JLabel output;
private JComboBox function;
public CalcFrame()
{
function = new JComboBox();
// Your work here
input = new JTextField(10);
input.setText("10");
output = new JLabel("Select a function");
setLayout(new FlowLayout());
add(function);
add(input);
add(output);
}
}
The following class is used to check your work:
import javax.swing.JFrame;
public class CalcFrameViewer
{
public static void main(String[] s)
{
CalcFrame frame = new CalcFrame();
frame.setSize(400, 75);
frame.setTitle("CalcFrameViewer");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
