Java JOptionPane ShowMessageDialog

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import javax.swing.*;

public class JavaJOptionPaneshowMessageDialog {

	JFrame f;  
	JavaJOptionPaneshowMessageDialog(){  
	    f=new JFrame();  
	    JOptionPane.showMessageDialog(f,"Hello, Welcome to JavaScan.com");  
	}  
	public static void main(String[] args) {  
	    new JavaJOptionPaneshowMessageDialog();  
	}  

}

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