Computing Values in TextField

[romanzo]

Hi,

I need help to compute the values on a TextField by converting it into Int,
this is the code and I got no other clues on doing this...
or post a link that has the answers tnx..

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class advjav extends JFrame{
	double add,a,b;
	JButton compute=new JButton("COMPUTE");
	JTextField tf=new JTextField();
	JTextField tf2=new JTextField();
	JLabel jl=new JLabel("Input first No.");
	JLabel jl2=new JLabel("Input second No.");
	JPanel jp=new JPanel(new GridLayout(4,1));


	public advjav()throws Exception{
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jp.add(jl);
		jp.add(tf);
		jp.add(jl2);
		jp.add(tf2);
		jp.add(compute);

		compute.addActionListener(new ActionListener(){
					public void actionPerformed(ActionEvent e){
						try{
				String i=tf.getText();
				int s=Integer.valueOf(i);
				tf.setText(i);
				String b=tf2.getText();
				int c=Integer.valueOf(b);
				tf2.setText(b);
				System.out.print(""+(i+b));
			}catch(Exception exp){}
				}
					});

		getContentPane().add(jp, "Center");
		pack();
		}

		public static void main(String [] args)throws Exception{
		new advjav().setVisible(true);
		}
}

[Tolls]

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class advjav extends JFrame{
	double add,a,b;
	JButton compute=new JButton("COMPUTE");
	JTextField tf=new JTextField();
	JTextField tf2=new JTextField();
	JLabel jl=new JLabel("Input first No.");
	JLabel jl2=new JLabel("Input second No.");
	JPanel jp=new JPanel(new GridLayout(4,1));


	public advjav()throws Exception{
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jp.add(jl);
		jp.add(tf);
		jp.add(jl2);
		jp.add(tf2);
		jp.add(compute);

		compute.addActionListener(new ActionListener(){
					public void actionPerformed(ActionEvent e){
						try{
				String i=tf.getText();
				int s=Integer.valueOf(i);
				tf.setText(i);
				String b=tf2.getText();
				int c=Integer.valueOf(b);
				tf2.setText(b);
				System.out.print(""+(i+b));
			}catch(Exception exp){}
				}
					});

		getContentPane().add(jp, "Center");
		pack();
		}

		public static void main(String [] args)throws Exception{
		new advjav().setVisible(true);
		}
}

Please use code tags when posting code.

Are you getting any errors?
If so what are they and what lines are causing them?

People aren't going to run this to see what the problem is.

[romanzo]

Sorry about the tags but there are no run time error i just want to know what codes to use to convert the string value on the TextField to Integer.

[Tolls]

Have a look at the API for Integer.

[Tolls]

Oh yes, one thing, don't do this:

}catch(Exception exp){}

Because if you get an exception you'll never know about it.
At the least do this:

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

[romanzo]

thanks for the help tolls...

[DarrylBurke]

Nothing advanced about this question. Moving to New to Java

db

[Kuttappu]

I dont know what i say is foolishness coz this is something basic. Have you tried this?

String s = tf.getText();
int a = Integer.parseInt(s);

[Tolls]

Did you miss my post?
That's exactly what I was pointing the OP at with the API link.
That way they also get to know about where the API is and how to look for things in it.