This is a Java-related typical swing source, for us to understand this may have helped

swingcode
.........\Basics
.........\......\CenteredFrameTest
.........\......\.................\CenteredFrame.class
.........\......\.................\CenteredFrameTest.class
.........\......\.................\CenteredFrameTest.jar
.........\......\.................\CenteredFrameTest.java

.........\......\.................\manifest.txt
.........\......\.................\SimplePanel.class
.........\......\SimpleFrameTest
.........\......\...............\SimpleFrameTest.java
.........\Components
.........\..........\BorderTest
.........\..........\..........\BorderTest.java
.........\..........\CheckBoxTest
.........\..........\............\CheckBoxTest.java
.........\..........\ComboBoxTest
.........\..........\............\ComboBoxTest.java
.........\..........\MenuTest
.........\..........\........\copy.gif
.........\..........\........\cut.gif
.........\..........\........\MenuFrame$1.class
.........\..........\........\MenuFrame$2.class
.........\..........\........\MenuFrame$3.class
.........\..........\........\MenuFrame.class
.........\..........\........\MenuTest.class
.........\..........\........\MenuTest.java
.........\..........\........\paste.gif
.........\..........\........\TestAction.class
.........\..........\RadioButtonTest
.........\..........\...............\RadioButtonTest.java
.........\..........\SliderTest
.........\..........\..........\ace.gif
.........\..........\..........\jack.gif
.........\..........\..........\king.gif
.........\..........\..........\nine.gif
.........\..........\..........\queen.gif
.........\..........\..........\SliderTest.java
.........\..........\..........\ten.gif
.........\..........\TextAreaTest
.........\..........\............\TextAreaTest.java
.........\..........\TextEditTest
.........\..........\............\TextEditTest.java
.........\..........\TextTest
.........\..........\........\TextTest.java
.........\..........\ToolBarTest
.........\..........\...........\blue-ball.gif
.........\..........\...........\exit.gif
.........\..........\...........\red-ball.gif
.........\..........\...........\ToolBarTest.java
.........\..........\...........\yellow-ball.gif
.........\DialogTest
.........\..........\ColorChooserTest
.........\..........\................\ColorChooserTest.java
.........\..........\DialogTest
.........\..........\..........\DialogTest.java
.........\..........\FileChooserTest
.........\..........\...............\FileChooserTest.java
.........\..........\...............\palette.gif
.........\..........\FontDialog
.........\..........\..........\FontDialog.java
.........\..........\..........\GBC.java
.........\..........\JOptionDemo$1.class
.........\..........\JOptionDemo$2.class
.........\..........\JOptionDemo.class
.........\..........\JOptionDemo.java
.........\..........\ManualDisplayPopup$1.class
.........\..........\ManualDisplayPopup.class
.........\..........\ManualDisplayPopup.java
.........\..........\OptionDialogTest
.........\..........\................\blue-ball.gif
.........\..........\................\ButtonPanel.class
.........\..........\................\OptionDialogFrame$1.class
.........\..........\................\OptionDialogFrame$ShowAction.class
.........\..........\................\OptionDialogFrame.class
.........\..........\................\OptionDialogTest.class
.........\..........\................\OptionDialogTest.java
.........\..........\................\red-ball.gif
.........\..........\................\SamplePanel.class
.........\..........\................\yellow-ball.gif
.........\..........\OptionPaneSample$1.class
.........\..........\OptionPaneSample.class
.........\..........\OptionPaneSample.java
.........\..........\OptionPaneUtils$1.class
.........\..........\OptionPaneUtils$1NarrowOptionPane.class
.........\..........\OptionPaneUtils$2.class
.........\..........\OptionPaneUtils.class
.........\..........\OptionPaneUtils.java
.........\..........\SamplePopup$1.class
.........\..........\SamplePopup.class
.........\..........\SamplePopup.java
.........\Event&Listeners
.........\...............\ActionTes

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