package laborator;


import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class Calculator2 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		JFrame frame=new JFrame("Calculator");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(350,350);
		frame.setLocation(400,400);
		frame.getContentPane().setLayout(new GridLayout(3,1));
		JPanel p1=new JPanel(new FlowLayout());
		JLabel oplabel1=new JLabel("Operand 1");
		oplabel1.setPreferredSize(new Dimension(120,20));
		JTextField tf1=new JTextField();
		tf1.setPreferredSize(new Dimension(120,20));
		JLabel oplabel2=new JLabel("Operand 2");
		oplabel2.setPreferredSize(new Dimension(120,20));
		JTextField tf2=new JTextField();
		tf2.setPreferredSize(new Dimension(120,20));
		p1.add(oplabel1);
		p1.add(tf1);
		p1.add(oplabel2);
		p1.add(tf2);

		JTextArea rez=new JTextArea();
		rez.setPreferredSize(new Dimension(220,60));
		JPanel p2=new JPanel(new FlowLayout());
		JButton adunare=new JButton("adunare");
		adunare.setPreferredSize(new Dimension(120,20));
		adunare.addActionListener(new Adunare(tf1,tf2,rez));

		JButton scadere=new JButton("scadere");
		scadere.setPreferredSize(new Dimension(120,20));
		scadere.addActionListener(new Scadere(tf1,tf2,rez));

		JButton inmultire=new JButton("inmultire");
		inmultire.setPreferredSize(new Dimension(120,20));
		inmultire.addActionListener(new Inmultire(tf1,tf2,rez));

		JButton impartire=new JButton("impartire");
		impartire.setPreferredSize(new Dimension(120,20));
		impartire.addActionListener(new Impartire(tf1,tf2,rez));
		p2.add(adunare);
		p2.add(scadere);
		p2.add(inmultire);
		p2.add(impartire);

		JPanel p3=new JPanel(new FlowLayout());
		JButton clear=new JButton("clear");
		clear.addActionListener(new Clear(rez));
		clear.setPreferredSize(new Dimension(220,30));
		p3.add(rez);
		p3.add(clear);
		frame.getContentPane().add(p1);
		frame.getContentPane().add(p2);
		frame.getContentPane().add(p3);
		frame.setVisible(true);
	}
}


package laborator;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Adunare implements ActionListener{
  private JTextField tf1;
  private JTextField tf2;
  private  JTextArea rez;
  public Adunare(JTextField tf1, JTextField tf2, JTextArea rez)
  {
	  this.tf1=tf1;
	  this.tf2=tf2;
	  this.rez=rez;
  }
  public void actionPerformed(ActionEvent e)
  {
	  int op1,op2;
	  op1=Integer.parseInt(tf1.getText());
	  op2=Integer.parseInt(tf2.getText());
	  rez.append(String.valueOf(op1+op2)+"\n");
  }
}

package laborator;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Scadere implements ActionListener{
  private JTextField tf1;
  private JTextField tf2;
  private  JTextArea rez;
  public Scadere(JTextField tf1, JTextField tf2, JTextArea rez)
  {
	  this.tf1=tf1;
	  this.tf2=tf2;
	  this.rez=rez;
  }
  public void actionPerformed(ActionEvent e)
  {
	  int op1,op2;
	  op1=Integer.parseInt(tf1.getText());
	  op2=Integer.parseInt(tf2.getText());
	  rez.append(String.valueOf(op1-op2)+"\n");
  }
}


package laborator;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Inmultire implements ActionListener{
  private JTextField tf1;
  private JTextField tf2;
  private  JTextArea rez;
  public Inmultire(JTextField tf1, JTextField tf2, JTextArea rez)
  {
	  this.tf1=tf1;
	  this.tf2=tf2;
	  this.rez=rez;
  }
  public void actionPerformed(ActionEvent e)
  {
	  int op1,op2;
	  op1=Integer.parseInt(tf1.getText());
	  op2=Integer.parseInt(tf2.getText());
	  rez.append(String.valueOf(op1*op2)+"\n");
  }
}

package laborator;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Impartire implements ActionListener{
  private JTextField tf1;
  private JTextField tf2;
  private  JTextArea rez;
  public Impartire(JTextField tf1, JTextField tf2, JTextArea rez)
  {
	  this.tf1=tf1;
	  this.tf2=tf2;
	  this.rez=rez;
  }
  public void actionPerformed(ActionEvent e)
  {
	  int op1,op2;
	  op1=Integer.parseInt(tf1.getText());
	  op2=Integer.parseInt(tf2.getText());
	  rez.append(String.valueOf(op1/op2)+"\n");
  }
}



package laborator;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JTextArea;

public class Clear implements ActionListener {
	private  JTextArea rez;
	public Clear(JTextArea rez)
	{
		this.rez=rez;
	}
	public void actionPerformed(ActionEvent e)
	{
		rez.setText(null);
	}
}