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RectangleProgramTwo - areaL = new JLabel"Area"...

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//Java program to create a window and place four labels / import javax.swing.*; import java.awt.*; i public class RectangleProgramTwo extends JFrame { private static final int WIDTH = 400; private static final int HEIGHT = 300; private JLabel lengthL, widthL, areaL, perimeterL; public RectangleProgramTwo() { setTitle("Area and Perimeter of a Rectangle"); lengthL = new JLabel("Enter the length: ", SwingConstants.RIGHT); widthL = new JLabel("Enter the width: ", SwingConstants.RIGHT);
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Unformatted text preview: areaL = new JLabel("Area: ", SwingConstants.RIGHT); perimeterL = new JLabel("Perimeter: ", SwingConstants.RIGHT); Container pane = getContentPane(); pane.setLayout(new GridLayout(4, 1)); pane.add(lengthL); pane.add(widthL); pane.add(areaL); pane.add(perimeterL); setSize(WIDTH, HEIGHT); setVisible(true); setDefaultCloseOperation(EXIT_ON_CLOSE); } public static void main(String args) { RectangleProgramTwo rectObject = new RectangleProgramTwo(); } }...
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