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  1. import java.applet.*;
  2. import java.awt.*;
  3. import java.awt.event.*;
  4. /* <applet code="DivideDemo" width=500 height=500> </applet? */
  5.  
  6.  class DivideDemo extends Applet implements ActionListener,TextListener
  7. {
  8. Label l1,l2,l3;
  9. TextField t1,t2,t3;
  10. Button b1;
  11. int x,y; 
  12. float res=0;
  13. public void init()
  14. {
  15.     l1=new Label("Num1:");
  16.     l2=new Label("Num2:");
  17.     l3=new Label("Num3:");
  18.     t1=new TextField(10);
  19.     t2=new TextField(10);
  20.     t3=new TextField(10);
  21.     b1=new Button("Display");
  22.     add(l1);
  23.     add(t1);
  24.     add(l2);
  25.     add(t2);
  26.     add(b1);
  27.     add(l3);
  28.     add(t3);
  29.     b1.addActionListener(this);
  30.     t1.addTextListener(this);
  31.     t2.addTextListener(this);
  32. }
  33.    public void actionPerformed(ActionEvent ae)
  34.    {
  35.        try
  36.        {
  37.            int x=Integer.parseInt(t1.getText());
  38.            int y=Integer.parseInt(t2.getText());
  39.            if(ae.getSource()==b1)
  40.              res=x/y;
  41.        }
  42.        catch(NumberFormatException nfe)
  43.        { 
  44.            javax.swing.JOptionPane.showMessageDialog(this, "Please enter Integer value");
  45.        }
  46.        catch(ArithmeticException afe)
  47.        {
  48.            javax.swing.JOptionPane.showMessageDialog(this,"Please enter non-zero value");
  49.        }
  50.        t3.setText(String.valueOf(res));
  51.    }
  52.    public void textValueChanged(TextEvent te)
  53.    {
  54.        if(!t1.getText().equals("")&&(!t2.getText().equals("")))
  55.        {
  56.            b1.setEnabled(true);
  57.  
  58.        }
  59.        else
  60.            b1.setEnabled(false);
  61.  
  62.    }
  63. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
spoj: The program compiled successfully, but main class was not found.
      Main class should contain method: public static void main (String[] args).
stdout
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Standard output is empty
https://ideone.com/akXfNn
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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