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Things we can do with subclasses of Labeled
With buttons, labels, check box etc. we can create them with an image. So new Button(“Text”, “/imagepath”)
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Things we can do with subclasses of buttonbase
On action lambda expressions. (Check box, radio button, button)
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Using radio button vs check box
Cannot choose more than one radio button at a time. Must create a new toggle group for each set
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How to enter multiple lines of text
TextArea object
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How to assign toggle group to each radioButton
createdButton1.setToggleGroup(createdGroup);
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Control subclasses
Labeled, scrollbar, slider, textInputControl, ListView, ComboBoxBase
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Why can’t you setOnAction with TextInputControl subclasses
Because it is not a subclass of ButtonBase
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Subclasses of control
Labeled(ButtonBase), ScrollBar, Slider, TextInputControl, ListView, ComboBoxBase
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How does javafx handle video and audio
H
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What can be done with audio and video
H
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How to populate ComboBox
- ObserveableList items =
- FXCollections.observableArrayList(“Item 1”, “Item 2”, “Item 3”);
- THEN......
- ComboBox cmb1 = new ComboBox<>(items);
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How to switch from single choice or multiple choice in a ListView
setSelectionMode(SelectionMode.MULTIPLE);
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Difference between text and binary files
Binary files are meant for computer to read. Both use try with, both need outside objects to read/write
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Advantage between text and binary files
Binary more efficient to process. Text files have to be encoded and decided where as binary files do not require conversions
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How to do input/output with integers in binary files?
- FileOutputStream output, output.write(“”);
- FileInputStream input, input.read(“”);
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How to write primitives other than int to binary file
By creating a Data Input/Output Stream object with a FileInputStream object in the constructor
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Why and how to use buffered streams
Buffered streams write/read data much faster. input = new DataInputStream(new BufferedInputStream(new FileInputStream(file)));
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