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Help is available for each task.



    Task 1

    Add a new Label to the applet with text of "Some Components".


    You can do this in several ways. First, create the Label, set its text, and add it as follows:

    Label someLabel = new Label();
    someLabel.setText("Some Components");
    add(someLabel);
    

    Second, you can create the Label and pass the text to display at the same time as follows:

    Label someLabel = new Label("Some Components");
    add(someLabel);
    

    Finally, you can combine all the steps into a single statement if you will not need a reference to the Label later in your program as follows:

    add(new Label("Some components"));
    

    Task 2

    Add a new Button with a label of "Ok" to the applet.


    You can do this in several ways. First, create the Button, set its text, and add it as follows:

    Button someButton = new Button();
    someButton.setLabel("Ok");
    add(someButton);
    

    Second, you can create the Button and pass the text to display at the same time as follows:

    Button someButton = new Button("Ok");
    add(someButton);
    

    Finally, you can combine all the steps into a single statement if you will not need a reference to the Button later in your program, as follows:

    add(new Button("Ok"));
    

    Task 3

    Add another Button with a label of "A Big Button" to the applet.


    Similar to the last task, you can do this as follows:.

    add(new Button("A Big Button"));
    

    Task 4

    Add a new Checkbox with a label of "Anybody home?" to the applet.


    You can do this in several ways. First, create the Checkbox, set its text, and add it as follows:

    Checkbox someCheckbox = new Checkbox();
    someCheckbox.setLabel("Anybody home?");
    add(someCheckbox);
    

    Second, you can create the Checkbox and pass the text to display at the same time as follows:

    Checkbox someCheckbox = new Checkbox("Anybody home?");
    add(someCheckbox);
    

    Finally, you can combine all the steps into a single statement if you will not need a reference to the Checkbox later in your program, as follows:

    add(new Checkbox("Anybody home?"));
    

    Task 5

    Add a new TextField that is 20 characters wide to the applet.

    Note: The number of columns that you pass represents the preferred number of characters to be visible. This means:

    1. Some layout managers may ignore this setting.
    2. Because the preferred size is based on the size of the letter "M", if the TextField uses a proportional font, you may actually see more than 20 characters when displayed in a layout manager that respects the preferred width of the TextField.

    You can do this in several ways. First, create the TextField, set the number of columns, and add it as follows:

    TextField someTextField = new TextField();
    someTextField.setColumns(20);
    add(someTextField);
    

    Second, you can create the TextField and pass the number of columns at the same time, as follows:.

    TextField someTextField = new TextField(20);
    add(someTextField);
    

    Finally, you can combine all the steps into a single statement if you will not need a reference to the TextField later in your program as follows:

    add(new TextField(20));
    

    Task 6

    Add a new TextArea that is 4 rows by 10 character columns to the applet. Again, these sizes represent the preferred size of the TextArea, which may be respected or ignored by the layout manager in use.


    You can do this in several ways. First, create the TextArea, set the number of columns, and add it as follows:

    TextArea someTextArea = new TextArea();
    someTextArea.setRows(5);
    someTextArea.setColumns(10);
    add(someTextArea);
    

    Second, you can create the TextArea and pass the number of columns at the same time, as follows:

    TextArea someTextField = new TextArea(4,10);
    add(someTextArea);
    

    Finally, you can combine all the steps into a single statement if you will not need a reference to the TextArea later in your program, as follows:

    add(new TextArea(4,10));
    

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[ This page was updated: 14-Jul-2000 ]
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