Thread: Action Methods..

Hello all. So i creating Calculator and i have a problem. First see my code :

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import javax.swing.*;
 
 
public class Salutine extends JFrame {
 
	//Numbers
 
	private JButton nulis;
	private JButton vienas;
	private JButton du;
	private JButton trys;
	private JButton keturi;
	private JButton penki;
	private JButton sesi;
	private JButton septyni;
	private JButton astuoni;
	private JButton devyni;
	private JTextField atsakymas;
 
 
 
	//Operators
 
	private JButton dalyba,daugyba,pridetis,atimtis;
 
	//Constructor
 
	public Salutine() {
		super("Skaiciuotuvas By xkendzu (Beta)");
		setLayout(new FlowLayout());
 
 
		nulis = new JButton("0");
		vienas = new JButton("1");
		du = new JButton("2");
		trys = new JButton("3");
		keturi = new JButton("4");
		penki = new JButton("5");
		sesi = new JButton("6");
		septyni = new JButton("7");
		astuoni = new JButton("8");
		devyni = new JButton("9");
 
 
 
		dalyba = new JButton("/");
		daugyba = new JButton("*");
		pridetis = new JButton("+");
		atimtis = new JButton("-");
 
 
 
		atsakymas = new JTextField("",20);
 
 
 
		add(nulis);
		add(vienas);
		add(du);
		add(trys);
		add(keturi);
		add(penki);
		add(sesi);
		add(septyni);
		add(astuoni);
		add(devyni);
		add(nulis);
		add(atsakymas);
 
 
		add(dalyba);
		add(daugyba);
		add(pridetis);
		add(atimtis);
 
		//Creating, when button pressing
 
 
		Skaiciai skaiciai = new Skaiciai();
		nulis.addActionListener(skaiciai);
		vienas.addActionListener(skaiciai);
		du.addActionListener(skaiciai);
		trys.addActionListener(skaiciai);
		keturi.addActionListener(skaiciai);
		penki.addActionListener(skaiciai);
		sesi.addActionListener(skaiciai);
		septyni.addActionListener(skaiciai);
		astuoni.addActionListener(skaiciai);
		devyni.addActionListener(skaiciai);
 
		Veiksmai veiksmai = new Veiksmai();
		dalyba.addActionListener(veiksmai);
		daugyba.addActionListener(veiksmai);
		pridetis.addActionListener(veiksmai);
		atimtis.addActionListener(veiksmai);
 
	}
 
	//Number class with method
 
	public class Skaiciai implements ActionListener {
 
		public void actionPerformed(ActionEvent e) {
			String nr1 = e.getActionCommand();
			String nr2 = e.getActionCommand();
 
			int nr11 = Integer.parseInt(nr1);
			int nr22 = Integer.parseInt(nr2);
 
 
 
 
		}
 
 
 
	}
 
	//Operator class with method
 
	public class Veiksmai implements ActionListener {
 
		public void actionPerformed(ActionEvent e1) {
 
			String op = e1.getActionCommand();
 
 
		}
 
 
 
 
	}
 
 
 
 
 
}

So when you pressed button of number, JTextField change text like 1 and when you pressed operator changed text to 1 +-/* and finally when you pressed last number change text to 1 +-/* 2 = 3.. So i need know how post variables with value in the next actionPerformed method. Maybe my code bad? Maybe I must using other method? Can you help me? Thanks..

You can do what you describe in the existing actionPerformed() method. For example, you could set the TextField to the button pressed with the statement:

atsakymas.setText( nr1 );

You can then build on that using a StringBuilder object perhaps to which the operator and subsequent buttons could be added.

Can you tell me more about String builder?

Anytime you need to know more about a Java core or SE class, simply Google, 'java class doc' where 'class' = the name of the class you're interested in. For example, for StringBuilder, Google 'java stringbuilder doc'. Using that formula, the top result will normally be the desired page.