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  1.  
  2. import java.awt.Button;
  3. import java.awt.GridLayout;
  4. import java.awt.event.ActionEvent;
  5. import java.awt.event.ActionListener;
  6.  
  7. import javax.swing.AbstractButton;
  8. import javax.swing.JButton;
  9. import javax.swing.JFrame;
  10. import javax.swing.JPanel;
  11.  
  12. public class test {
  13.  
  14. 	public static void main(String[] args)
  15. 	{
  16. 		AbstractButton[] Buttons=new AbstractButton[49];
  17. 		JFrame frame=new JFrame();
  18. 		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  19. 		frame.setSize(500, 500);
  20. 		frame.setResizable(false);
  21. 		frame.setLayout(new GridLayout(7,7));
  22. 		for(int i=0;i<49;i++){
  23. 		Buttons[i]=new myButton();
  24. 		frame.add(Buttons[i]);
  25. 		}
  26. 		frame.setVisible(true);
  27. 	}
  28.  
  29. }
  30. class myButton extends JButton{
  31. 	Boolean boom=false;
  32. 	myButton(){
  33.  
  34.  
  35. 		addActionListener(new ActionListener() {
  36. 			public void actionPerformed(ActionEvent e) {
  37.  
  38. 				BtnRun_Click();
  39. 			}
  40.  
  41. 			private void BtnRun_Click() {
  42. 				// TODO Auto-generated method stub
  43. 				setEnabled(false);
  44. 			}
  45. 		});
  46. 		requestFocusInWindow();
  47. 	}
  48.  
  49.  
  50. }
  51.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:12: error: class test is public, should be declared in a file named test.java
public class test {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/aO2SFH
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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