problems compiling a swing program

[mak1084]

hi friends i'm not able to debug this code please tell me wht is wrong here...

import java.awt.*;
import java.awt.event.*;
import java.swing.*;
class test extends JFrame implements ActionListener
{
	
	JButton b1;
	JTextField Tf1;
	public test()
	{
		b1=new JButton("1");
		Tf1=new TextField(10);
		
		setLayout(new Frlowlayout());
		
		add(b1);
		add(Tf1);
		
		addActionListener(this);
		
		setSize(200,200);
		setVisible(true);
						
	}
	public void actionPerformed(ActionEvent e)
	if (e.getSource() == b1)
	{
		Tf1.setText("1");
	}
	public static void main(String args[])
	{
		test t=new test();
	}
}

[Nepomuk]

[CODE=java]
import java.awt.*;
import java.awt.event. *;
import javax.swing.*; // Correction 1
class test extends JFrame implements ActionListener
{

JButton b1;
JTextField Tf1;
public test()
{
b1=new JButton("1");
Tf1=new JTextField(10); // Correction 2

setLayout(new Frlowlayout()); // What should that be?

add(b1);
add(Tf1);

addActionListen er(this); // This IS an ActionListener - why do you want to add one?

setSize(200,200 );
setVisible(true );

}
public void actionPerformed (ActionEvent e) // Correction 3
{
if (e.getSource() == b1)
{
Tf1.setText("1" );
}
}
public static void main(String args[])
{
test t=new test();
}
}
[/CODE]

[r035198x]

hi friends i'm not able to debug this code please tell me wht is wrong here...

import java.awt.*;
import java.awt.event.*;
import java.swing.*;
class test extends JFrame implements ActionListener
{
	
	JButton b1;
	JTextField Tf1;
	public test()
	{
		b1=new JButton("1");
		Tf1=new TextField(10);
		
		setLayout(new Frlowlayout());
		
		add(b1);
		add(Tf1);
		
		addActionListener(this);
		
		setSize(200,200);
		setVisible(true);
						
	}
	public void actionPerformed(ActionEvent e)
	if (e.getSource() == b1)
	{
		Tf1.setText("1");
	}
	public static void main(String args[])
	{
		test t=new test();
	}
}

Frlowlayout should have been FloorLayout?

[Nepomuk]

Frlowlayout should have been FloorLayout?

Probably FlowLayout. ^^

[praveen2gupta]

Hi
Line setLayout(new Frlowlayout());
is wrong It should be written as
setLayout(new Flowlayout());
Rest is o.k.

[r035198x]

Frlowlayout should have been FloorLayout?

Oh yeah, thanks.

[JosAH]

Do not add JComponents to a JFrame directly. Get the JFrame's content pane
(see the API docs) and add your components to that pane instead.

kind regards,

Jos

[mak1084]

[PHP]import java.awt.*;
import java.awt.event. *;
import javax.swing.*;
class test extends JFrame implements ActionListener
{

JButton b1;
JTextField Tf1;
public test()
{
b1=new JButton("1");
Tf1=new JTextField(10);

setLayout(new Flowlayout());

add(b1);
add(Tf1);

addActionListen er(this);

setSize(200,200 );
setVisible(true );

}
public void actionPerformed (ActionEvent e)
if (e.getSource() == b1)
{
Tf1.setText("1" );
}
public static void main(String args[])
{
test t=new test();
}
}[/PHP]

after compiling geting this error...

C:\test.java:26: ';' expected
    if (e.getSource() == b1)

[JosAH]

[PHP]import java.awt.*;
import java.awt.event. *;
import javax.swing.*;
class test extends JFrame implements ActionListener
{

JButton b1;
JTextField Tf1;
public test()
{
b1=new JButton("1");
Tf1=new JTextField(10);

setLayout(new Flowlayout());

add(b1);
add(Tf1);

addActionListen er(this);

setSize(200,200 );
setVisible(true );

}
public void actionPerformed (ActionEvent e)
if (e.getSource() == b1)
{
Tf1.setText("1" );
}
public static void main(String args[])
{
test t=new test();
}
}[/PHP]

after compiling geting this error...

C:\test.java:26: ';' expected
    if (e.getSource() == b1)

See how you defined your, eg, main method; spot the diferences from your
actionPerformed method (don't mention 'static').

kind regards,

Jos

[mak1084]

See how you defined your, eg, main method; spot the diferences from your
actionPerformed method (don't mention 'static').

kind regards,

Jos

Not geting wht u want to say i'm novice in java....

[JosAH]

Not geting wht u want to say i'm novice in java....

you have to defined a method like this:

[code=java]
<access rights and type> methodName(<opt ional params here ...> {

<statements>

}
[/code]

Note the two curly brackets and have another look at your actionPerformed method.

kind regards,

Jos

[mak1084]

you have to defined a method like this:

[code=java]
<access rights and type> methodName(<opt ional params here ...> {

<statements>

}
[/code]

Note the two curly brackets and have another look at your actionPerformed method.

kind regards,

Jos

thnk u very much i think i really really not made for java this was silly mistake...and i was not able to debug shame on me :(
thnx a lot for yor help..

[JosAH]

thnk u very much i think i really really not made for java this was silly mistake...and i was not able to debug shame on me :(
thnx a lot for yor help..

No need to worry; you'll learn; all you have to do is practice and read.

kind regards,

Jos

[mak1084]

hi again i stuck in this code...can you please tell me how to add to values in Text field.

[CODE=java]import java.awt.*;
import java.awt.event. *;
import javax.swing.*;
class test extends JFrame implements ActionListener
{

JButton b1,b2,b3,b4;
JTextField Tf1;
String s,s1,k;

public test()
{
b1=new JButton("1");
b2=new JButton("2");
b3=new JButton("add");
b4=new JButton("=");
Tf1=new JTextField(10);

setLayout(new FlowLayout());

add(b1);
add(b2);
add(b3);
add(b4);
add(Tf1);

b1.addActionLis tener(this);
b2.addActionLis tener(this);
b3.addActionLis tener(this);
b4.addActionLis tener(this);

setSize(200,200 );
setVisible(true );

}
public void actionPerformed (ActionEvent e)
{
if (e.getSource() == b1)
{
Tf1.setText("1" );
}
else if (e.getSource() == b2)
{
s=Tf1.getText() ;
Tf1.setText("2" );
}
else if (e.getSource() == b3)
{
Tf1.setText("") ;

}
else if (e.getSource() == b4)
{
s1=Tf1.getText( );
k=s+s1;
Tf1.setText(k); //Its concanating instead of adding..
}
}
public static void main(String args[])
{
test t=new test();
}
}[/CODE]

[JosAH]

hi again i stuck in this code...can you please tell me how to add to values in Text field.

Please read my reply #7 again before you code any further.

kind regards,

Jos