Set JOptionPane error icon

Complete source code below will show you, how to set error icon in JOptionPane.

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COMPLETE SOURCE CODE FOR : SetJOptionPaneErrorIcon.java
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import javax.swing.*;

public class SetJOptionPaneErrorIcon
{
public static void main(String[]args)
{
 //null-Message Box appear in no parent component
 //Error Icon-text in message box
 //ERROR-JOptionPane title
 //JOptionPane.ERROR_MESSAGE-Set error icon that will be show in message box
 JOptionPane.showMessageDialog(null,"Error Icon","ERROR",JOptionPane.ERROR_MESSAGE);
}
}

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JUST COMPILE AND EXECUTE IT
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