Introduction

boolean b;

// Check if character-based attribute
b = StyleConstants.Italic instanceof AttributeSet.CharacterAttribute;      // true
b = StyleConstants.LineSpacing instanceof AttributeSet.CharacterAttribute; // false

// Check if paragraph-based attribute
b = StyleConstants.LineSpacing instanceof AttributeSet.ParagraphAttribute; // true
b = StyleConstants.Italic instanceof AttributeSet.ParagraphAttribute;      // false