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This is a working program. But there is a logical error. Try this with the calculator: Press 2,M; Press R,*,2; Press R,*2; The output in the same order must be: 2 2*2 = 4 2*2 = 4 but the third one outputs 88 instead. M stands for Memory, it stores …
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package MyJava; //change package name according to what the name of the package //the class would be installed to import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; public class [B]Calculator[/B] extends JFrame implements ActionListener{ private JTextField displayText = new JTextField(30); private JButton[] button = new JButton[16]; private String[] keys = …
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