Java中下划线字体的常量值是什么？
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What is the Constant Value of the Underline font in Java?
提问by Waseem
What is the Constant Value of the Underline font in Java ?
Java中下划线字体的常量值是多少？
Font.BOLD boldfont
Font.BOLD 加粗字体
Font.ITALIC italicfont
Font.ITALIC 斜体字体
What is the UNDERLINE font Constant ? I try all the available constants but it didn't work .
什么是 UNDERLINE 字体 Constant ？我尝试了所有可用的常量，但没有用。
回答by tvanfosson
Underlining is not a property of the font but of the text segment. When rendered the text is rendered in the font specified then a line is drawn under it. Depending on what framework you are using, this may be done for you using properties or you may have to do it yourself.
下划线不是字体的属性，而是文本段的属性。呈现时，文本以指定的字体呈现，然后在其下方绘制一条线。根据您使用的框架，这可能是使用属性为您完成的，或者您可能必须自己完成。
回答by Markus Lausberg
For SWT you can use:
对于 SWT，您可以使用：
StyledText text = new StyledText(shell, SWT.BORDER);
text.setText("0123456789 ABCDEFGHIJKLM NOPQRSTUVWXYZ");
// make 0123456789 appear underlined
StyleRange style1 = new StyleRange();
style1.start = 0;
style1.length = 10;
style1.underline = true;
text.setStyleRange(style1);
回答by coobird
Looking at the Java API Specification, it appears that the Fontclassdoes not have a constant for underlining.
查看Java API Specification，Font该类似乎没有用于下划线的常量。
However, using the Font(Map<? extends AttributedCharacterIterator.Attribute,?> attributes)constructor, one can give it a Mapcontaining the TextAttributeand the value to use, in order to specify the font attributes. (Note that the TextAttributeclass is a subclass of AttributedCharacterIterator.Attribute)
但是，使用Font(Map<? extends AttributedCharacterIterator.Attribute,?> attributes)构造函数，可以给它一个Map包含TextAttribute要使用的值和值，以便指定字体属性。（请注意，TextAttribute该类是 的子类AttributedCharacterIterator.Attribute）
TextAttribute.UNDERLINEseems like the TextAttributeof interest.
TextAttribute.UNDERLINE似乎很TextAttribute有趣。
Edit:There's an example of using TextAttributein the Using Text Attributes to Style Textsection from The Java Tutorials.
编辑：The Java TutorialsTextAttribute的Using Text Attributes to Style Text部分中有一个使用示例。
回答by Blake
Suppose you wanted a underlined and bolded Serif style font, size=12.
假设您想要一个带下划线和粗体的 Serif 样式字体，size=12。
Map<TextAttribute, Integer> fontAttributes = new HashMap<TextAttribute, Integer>();
fontAttributes.put(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON);
Font boldUnderline = new Font("Serif",Font.BOLD, 12).deriveFont(fontAttributes);
If you don't want it bolded, use Font.PLAIN instead of Font.BOLD. Don't use the getAttributes() method of the Font class. It will give you a crazy wildcard parameterized type Map<TextAttribute,?>, and you won't be able to invoke the put() method. Sometimes Java can be yucky like that. If you're interested in why, you can check out this site: http://www.angelikalanger.com/GenericsFAQ/FAQSections/ParameterizedTypes.html
如果您不希望它加粗，请使用 Font.PLAIN 而不是 Font.BOLD。不要使用 Font 类的 getAttributes() 方法。它会给你一个疯狂的通配符参数化类型Map<TextAttribute,?>，你将无法调用 put() 方法。有时 Java 会像那样令人讨厌。如果您对原因感兴趣，可以查看此站点：http: //www.angelikalanger.com/GenericsFAQ/FAQSections/ParameterizedTypes.html
