how to change the coordinates of JTextfield
i want to change the coordinates of the jtextfield[ ] ...here is the code
import java.awt.*;
import java.applet.*;
import java.util.*;
import java.lang.Math.*;
import javax.swing.*;
import java.awt.Toolkit;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class tm extends JApplet implements ActionListener{
public void init()
{
Container contentPane = getContentPane();
contentPane.setLayout(new FlowLayout());
JButton loadi = new JButton("LOAD INPUT STRING");
contentPane.add(loadi);
loadi.addActionListener(this);
JButton loadp = new JButton("LOAD PROGRAM");
contentPane.add(loadp);
loadp.addActionListener(this);
JButton run = new JButton("RUN");
contentPane.add(run);
run.addActionListener(this);
JButton step = new JButton("STEP");
contentPane.add(step);
step.addActionListener(this);
JTextField[] prog = new JTextField[10];
for(int i=0;i<prog.length;i++)
{
prog= new JTextField(10);
contentPane.add(prog);
}
}
public void actionPerformed(ActionEvent e)
{
}
}>
first, you have to set the content pane's layout to null.
contentPane.setLayout(null);
Then, with every component you add to the content pane, you have to call setBounds() on. The arguments are:
setBounds(x, y, width, height)
Use this method to set the boundaries of a component. If you just want to change the position, use
setLocation(x, y)
First, when posting code, use the code tags (button above posting box). This will avoid the [ i ] changing your code into illegible italics.
Second, Swing questions should be posted in the Swing forum.
Third, using a null layout is probably not what you want. You didn't say what arrangement you really want the textfields to be in, but using a LayoutManager is most likely better than using a null layout. You can nest as many panels as you want. Maybe put the four buttons on one JPanel inside the content pane, and put the ten textfields on a separate JPanel inside the content pane.
This line is useless:
import java.lang.Math.*;
java.lang.Math is not a package.
And, you never have to import anything in the java.lang package--all classes in that package are imported implicitly.
Your classname "tm" should start with a capital letter, according to standard Java naming conventions. So, "Tm", or something more descriptive (I don't know what "Tm" means, so I can't suggest anything specific myself).
Also, you have the following:
import java.awt.*;
import java.awt.Toolkit;
import java.awt.BorderLayout;
Although it is legal to have both the "*" and specific classes in the same package, in your case, it isn't very useful. You probably should delete the java.awt.* and just import individual classes. You aren't even using the two you imported individually, anyway.
somewhere in the screen says award duke dollars with a duke image at a side.
I use normally the XYLayout from jBuilder that alows you to place your components in X-Y coordinates I think its easier this way.
I use the jBuilder but I think other programs have something like it to.
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;
XYLayout xYLayout1 = new XYLayout();
this.getContentPane().setLayout(xYLayout1);
> I use normally the XYLayout from jBuilder that alows
> you to place your components in X-Y coordinates I
> think its easier this way.
>
> I use the jBuilder but I think other programs have something like it to.
XYLayout is the same as "null" layout, I was told. If you want your Java programs to be portable to other computers and operating systems without a dependence on JBuilder, you shouldn't use XYLayout in the final program.
