By Daniel Horn Abstract: This paper discusses simple methods for changing default settings for UI elements in Swing. These methods can simplify testing of UI layouts that otherwise might be dependent on the Look and Feel ( LAF) of an underlying platform. They can also be used to fix some of the problems (for example, with fonts or foreground and background colors) that may occur. The source code for a sample Java application demonstrates techniques for changing default properties of visual components and gives its user a simple way of getting information on default UI settings for LAFs; in particular, changing a default UI setting is easy once you know the name of the setting. The purpose of this paper is to introduce the Java UIManager and UIDefaults classes, to provide some tips on how the inspector and the visual designer in JBuilder interact with LAFs, and to discuss how these affect the appearance of your applications and applets. Introduction: When using the designer in JBuilder to create a GUI component such as a panel, frame, or dialog, one should always be careful that your layout does not depend solely on the current look and feel ( LAF). At design time, JBuilder makes it easy to test against different LAFs; simply right click on the designer and choose Metal, CDE/ Motif, or Windows from the Look and Feel submenu. However, design time testing is not enough. If you develop primarily on one platform, say Windows, and only test your Java app rarely on other platforms (e.g., Linux you will encounter some unpleasant surprises. As different operating systems and JDK versions will affect a LAF, runtime testing of your application or applet is also necessary. The layout and readability of a panel depends on such properties as the preferred size of contained components, while, for example, the component's size may depend on the font selected during.
You would need to call set Font(.) not set Style. For example, if you want to keep the same font but change the style of a JText Field called field you could do something like: field.set Font(field.get Font.derive Font( Font. BOLD Edit To set the font to both bold and italic, you'd or the bitmaps: field.set Font(field.get Font.derive Font( Font. BOLD | Font. ITALIC Please note that this uses the bitwise inclusive OR operator which uses a single pipe symbol: | rather than the logical OR operator which uses a double pipe symbol: |. Also note for further subtlety and confusion that | can be used as a logical OR operator, but you'll usually prefer to use | for this since the latter is a short-circuit operator in that if the left hand side of the expression is true, the right hand side isn't even evaluated.
Discussion in ' Java' started by Tom Parson, Nov 18, 2005. I would like to increase the font size for a JLabel or JButton (in a Grid Bag Layout) from normal/default to a bigger size. How do I specify a bigger font size? Tom Tom Parson <> wrote in message news:437dfebd[text_sites_2-3_
]940$-online.net. > I would like to increase the font size for a JLabel or JButton (in a Grid Bag Layout) > from normal/default to a bigger size. > > How do I specify a bigger font size? > Without looking at the API, something you should do. my Component.set Font(my Component.derive Font(my Size) or something very similar, look at java.awt. Font - Mike W Tom Parson <> wrote in message news:437dfebd[text_sites_2-3_
]940$-online.net. > I would like to increase the font size for a JLabel or JButton (in a > Grid Bag Layout) > from normal/default to a bigger size. > > How do I specify a bigger font size? JComponent (which JLabel and JButton extend) has a set Font method. - Oliver Tom Parson wrote: > I would like to increase the font size for a JLabel or JButton (in a Grid Bag Layout) > from normal/default to a bigger size. > > How do I specify a bigger font size? Just by setting a font with a size bigger than the default size of 12 onto your JLabel. For example: JLabel label =.; Font f = new Font( Dialog, Font. PLAIN, 24 label.set Font(f - Thomas: Fritsch$ops:de.replace.replace $ Tom Parson wrote: > I would like to increase the font size for a JLabel or JButton (in a Grid Bag Layout) > from normal/default to a bigger size. > > How do I specify a bigger font size? > > Tom > JMy Lable.set Font(new Font( Dialog, 1, 14) JMy Button.set Font(new Font( Dialog, 1, 14) - Thanks in Advance. Ich Bin, Pocono Lake, Pa, USA _ ' If there is one, Knowledge is the Fountain of Youth ' - William E. Taylor.
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