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import javax.swing.text.AttributeSet;
import javax.swing.text.StyleConstants;
public class Main {
  public static void main(String[] argv) {
    // Check if character-based attribute
    boolean b = StyleConstants.Italic instanceof AttributeSet.CharacterAttribute;
    b = StyleConstants.LineSpacing instanceof AttributeSet.CharacterAttribute; 
    // Check if paragraph-based attribute
    b = StyleConstants.LineSpacing instanceof AttributeSet.ParagraphAttribute; 
    b = StyleConstants.Italic instanceof AttributeSet.ParagraphAttribute; 
  }
}