java applet: output in textArea

flodis79

I have the code below, trying to make a java applet with a textField, button and textArea, where you enter a domain name in textField, click the button and get the ip address output in textArea. I get the ip address output in the system output window, but not in the textArea.. Please have a look at this code below and see what I am doing wrong. Thanks alot!


import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.net.*;
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;

public class InetAddressTester extends Applet {
boolean isStandalone = false;
BorderLayout borderLayout1 = new BorderLayout();
Panel panel1 = new Panel();
XYLayout xYLayout1 = new XYLayout();
TextField textField1 = new TextField();
Button button1 = new Button();
XYLayout xYLayout2 = new XYLayout();
TextArea textArea1 = new TextArea();
//Get a parameter value
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
}

//Construct the applet
public InetAddressTester() {
}

//Initialize the applet
public void init() {
try {
jbInit();
InetAddress localAddr = InetAddress.getByName("www.hotmail.com");
System.out.println("Local IP Address: \t\t" + localAddr.getHostAddress());
System.out.println("Local hostname: \t\t" + localAddr.getHostName());
System.out.println("Canonical local hostname: \t" + localAddr.getCanonicalHostName());

} catch (Exception e) {
e.printStackTrace();
}
}

//Component initialization
private void jbInit() throws Exception {
this.setLayout(xYLayout1);
textField1.setText("Input");
textField1.addActionListener(new
InetAddressTester_textField1_actionAdapter(this));
button1.setLabel("Click here");
button1.addActionListener(new InetAddressTester_button1_actionAdapter(this));
panel1.setLayout(xYLayout2);
textArea1.setText("Output");
this.add(panel1, new XYConstraints(59, 18, 268, 254));
panel1.add(button1, new XYConstraints(70, 30, -1, -1));
panel1.add(textField1, new XYConstraints(157, 31, -1, -1));
panel1.add(textArea1, new XYConstraints(87, 164, -1, -1));
}

//Get Applet information
public String getAppletInfo() {
return "Applet Information";
}

//Get parameter info
public String[][] getParameterInfo() {
return null;
}

//Main method
public static void main(String[] args) {
InetAddressTester applet = new InetAddressTester();
applet.isStandalone = true;

Frame frame;
frame = new Frame();
frame.setTitle("Applet Frame");

frame.add(applet, BorderLayout.CENTER);

applet.init();
applet.start();
frame.setSize(400, 320);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation((d.width - frame.getSize().width) / 2,
(d.height - frame.getSize().height) / 2);
frame.setVisible(true);
}

public void button1_actionPerformed(ActionEvent e) {

}

public void textField1_actionPerformed(ActionEvent e) {

}
}


class InetAddressTester_textField1_actionAdapter implements ActionListener {
private InetAddressTester adaptee;
InetAddressTester_textField1_actionAdapter(InetAdd ressTester adaptee) {
this.adaptee = adaptee;
}

public void actionPerformed(ActionEvent e) {
adaptee.textField1_actionPerformed(e);
}
}


class InetAddressTester_button1_actionAdapter implements ActionListener {
private InetAddressTester adaptee;
InetAddressTester_button1_actionAdapter(InetAddres sTester adaptee) {
this.adaptee = adaptee;
}

public void actionPerformed(ActionEvent e) {
adaptee.button1_actionPerformed(e);
}
}

pH

when you use

System.out.println("xxxx");

the output goes to the system output window

To put it in the text area (append to existing stuff in the textarea)

textArea1.setText(textArea1.getText() + "new stuff");

pH

To make the lookup happen when you click the button, just add the code you want to run into this method:

public void button1_actionPerformed(ActionEvent e) {
        // Put code to run on button click in here!
    }

flodis79

pH wrote:

To make the lookup happen when you click the button, just add the code you want to run into this method:

public void button1_actionPerformed(ActionEvent e) {
        // Put code to run on button click in here!
    }

Ok - so what's wrong with this code?

public void button1_actionPerformed(ActionEvent e){
        [B]InetAddress localAddr = InetAddress.getByName();
        String text_from_textField1 = (InetAddress.getByName);
        textArea1.setText("Local IP Address: \t\t" + localAddr.getHostAddress());[/B]
  }