Graphical User Interfaces - Beginning Java with WebSphere - page 73

1. Add the following statements after the this.add statement:

this .setTitle("New Frame Title");
this .setLayout( null );
this .setBounds(10, 10, 300, 300);
this .setVisible( true );

Notice that setter methods are used to define all the frame properties (Title, Bounds, etc.).

2. Format and save the EmpFrame source, then verify that there are no errors.

The executable code should look as follows:

package c3;

import java.awt.Frame;
import java.awt.Label;

public class EmpFrame extends Frame {
Label empNameLbl = new Label("My First Label");

public EmpFrame(Employee emp) {
empNameLbl.setBounds(100, 150, 150, 20);
this .add(empNameLbl);
this .setTitle("New Frame Title");
this .setLayout( null );
this .setBounds(10, 10, 300, 300);
this .setVisible( true );

}

}

3. Run EmployeeApp.

Notice that the same old frame (empFrame) with the cut off label is displayed. This is because EmployeeApp still
creates an Employee object and Employee creates the Frame object empFrame. We need to change EmployeeApp so
that it creates an EmpFrame object and change Employee so that it does not create a Frame object.

4. End EmployeeApp by clicking the Terminate button.

Tutorial: Using a Frame
Now let's use the frame:

1. In EmployeeApp, add the following statement after the Employee object emp is

instantiated:

EmpFrame ef = new EmpFrame(emp);