sysntax error?

[nu b]

Hello all. I am new and I am having a tough time spotting my error here. The
idea is to produce an applet that will have a JButton which I can push to
display the string myName. Later I will make it so that it will chage the
font size and style, but for now I can't even get it to display the String.
It compiles fine but when I launch it in the browser or with the
appletviewer, it shows the button and nothing happens when I click it. Can
you see anything wrong with the way i set this up? Thanks in advance.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class JBlueGrey extends JApplet implements ActionListener
{
String myName = new String("Randy");
JButton btnPush = new JButton("Push");
Font firstFont = new Font("Helvetica", Font.ITALIC, 8);

public void init()
{
Container con = getContentPane();
con.setLayout(new FlowLayout());
con.add(btnPush);
btnPush.addActionListener(this);
}

public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source == btnPush)
{
Graphics draw = getGraphics();
draw.setFont(firstFont);
draw.drawString(myName, 10, 100);
}

}

}

[Folke Bengtsson]

The modified code works.
Added setSize in the JApplets init method.
Added a main method for test, and call init from that method.

Your approach for drawing could be better.
implement a method called
public void paint(Graphics g){
g.drawString("randy", x, y);
}

and do all your drawing in that method (it is called from the
awt-thread, for all components that are to be drawn).

By implementing paint(..), we are telling awt to do the painting of the
component. paint is overridden to be handled correctly by the
swing-thread.

Don't mix awt and swing.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class JBlueGrey extends JApplet implements ActionListener
{
String myName = new String("Randy");
JButton btnPush = new JButton("Push");
Font firstFont = new Font("Helvetica", Font.ITALIC, 8);

public void init()
{
Container con = getContentPane();
con.setLayout(new FlowLayout());
con.add(btnPush);
btnPush.addActionListener(this);
//added
setSize(100, 100);
//to here
}

public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source == btnPush)
{
Graphics draw = getGraphics();
draw.setFont(firstFont);
draw.drawString(myName, 10, 100);
}

}
//added
public static void main(String[] args){
JFrame jf = new JFrame("etst");

JBlueGrey jApplet = new JBlueGrey();

jApplet.init();

jf.setContentPane(jApplet);
jf.pack();
jf.setVisible(true);
}
//to here
}

In article <aDHkb.30727$gi2.28720@fed1read01>, nu b
<yr******@yahoo.com> wrote:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class JBlueGrey extends JApplet implements ActionListener
{
String myName = new String("Randy");
JButton btnPush = new JButton("Push");
Font firstFont = new Font("Helvetica", Font.ITALIC, 8);

public void init()
{
Container con = getContentPane();
con.setLayout(new FlowLayout());
con.add(btnPush);
btnPush.addActionListener(this);
}

public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source == btnPush)
{
Graphics draw = getGraphics();
draw.setFont(firstFont);
draw.drawString(myName, 10, 100);
}

}

}

[Folke Bengtsson]

In article <20********************************@frobozz.se>, Folke
Bengtsson <Fo*************@frobozz.se> wrote:

The modified code works.
Added setSize in the JApplets init method.
Added a main method for test, and call init from that method.

Your approach for drawing could be better.
implement a method called
public void paint(Graphics g){ hmm...sorry.. should probably be
public void paintComponent(Graphics g){..}

I think I'm mixing awt and swing.
g.drawString("randy", x, y);
}

and do all your drawing in that method (it is called from the
awt-thread, for all components that are to be drawn).

By implementing paint(..), we are telling awt to do the painting of the
component. paint is overridden to be handled correctly by the
swing-thread.

Don't mix awt and swing.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class JBlueGrey extends JApplet implements ActionListener
{
String myName = new String("Randy");
JButton btnPush = new JButton("Push");
Font firstFont = new Font("Helvetica", Font.ITALIC, 8);

public void init()
{
Container con = getContentPane();
con.setLayout(new FlowLayout());
con.add(btnPush);
btnPush.addActionListener(this);
//added
setSize(100, 100);
//to here
}

public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source == btnPush)
{
Graphics draw = getGraphics();
draw.setFont(firstFont);
draw.drawString(myName, 10, 100);
}

}
//added
public static void main(String[] args){
JFrame jf = new JFrame("etst");

JBlueGrey jApplet = new JBlueGrey();

jApplet.init();

jf.setContentPane(jApplet);
jf.pack();
jf.setVisible(true);
}
//to here
}

In article <aDHkb.30727$gi2.28720@fed1read01>, nu b
<yr******@yahoo.com> wrote:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class JBlueGrey extends JApplet implements ActionListener
{
String myName = new String("Randy");
JButton btnPush = new JButton("Push");
Font firstFont = new Font("Helvetica", Font.ITALIC, 8);

public void init()
{
Container con = getContentPane();
con.setLayout(new FlowLayout());
con.add(btnPush);
btnPush.addActionListener(this);
}

public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source == btnPush)
{
Graphics draw = getGraphics();
draw.setFont(firstFont);
draw.drawString(myName, 10, 100);
}

}

}