Using a text editor, create the ChatClient class source file in the project directory. This class must implement teh GUI desing in Figure 10 - 1 on page Lab 10 - 2.

1.    Declare the ChatClient class.

import java.awt.*;

public class ChatClient {

//insert code here

}

 

2.     Add four atrributes to the ChatClient class to hold the GUI components.

private TextArea output;

private TextField input;

private Button sendButton;

private Button quitButton;

private TextArea output;

3.    Add a public constructor that initializes each of the four GUI component attributes: The text area soukd be 10 rows tall and 50 columns wide, the text field should be 50 columns wide, the send button should have word Send in the display, and the quit button should display a similar label.

public ChatClient(){

    output = new TextArea(10,50);

    input = new TextField(50);

    sendButton = new Button("Send");

    quitButton = new Button("Quit"); 

}

4.    Create a launchFrame method that constructs tha layout of the components. Feel free to use nested panels and any layout managers that will help you construct the layout in the GUI design shown above.

 

public void launchFrame(){

    Frame frame = new Frame("Chat Room");

 

    //Use the Border Layout for the frame

    frame.setLayout( new BorderLayout());

    frame.add(output, BorderLayout.WEST);

    frame.add(input, BorderLayout.SOUTH);

 

    //Create teh button panel

    Panel p1 = new Panel();

    p1.setLayout( new GridLayout(2,1));

    p1.add(sendButton);

    p1.add(quitButton);

 

    //Add the button panel to the center

    frame.add(p1, BorderLayout.CENTER);

 

    frame.pack();

    frame.setVisible(true); 

}

5.     Create teh main method. This method will instantiate a new ChatClient object and then call the  launchFrame method.

public static void main(String[] args){

    ChatClient c = new ChatClient();

    c.launchFrame();

}

Task 2 - Compiling the ChatClient Program

On the command line, use the javac command to compile the ChatClient program.

javac ChatClient.java