Operatii Din Text

package pack;

import java.util.ArrayList;
import java.util.Vector;

public class Adunare {
public ArrayList <Integer> v;
public Integer rezultat;
public Adunare(ArrayList <Integer> v)
{
int i;
rezultat=0;
this.v=v;
for(i=0;i<v.size();i++)
{
rezultat+=v.get(i);
}

}
public Integer getRezultat()
{
return this.rezultat;
}
}

package pack;

import java.util.ArrayList;

import java.util.Vector;

public class Inmultire {

public ArrayList <Integer> v;

public Integer rezultat;

public Inmultire(ArrayList <Integer> v)

{

int i;

rezultat=1;

this.v=v;

for(i=0;i<v.size();i++)

{

rezultat*=v.get(i);

}

}

public Integer getRezultat()

{

return this.rezultat;

}

}

package pack;

import java.awt.BorderLayout;

import java.awt.*;

import java.awt.event.*;

import java.util.ArrayList;

import java.util.StringTokenizer;

import java.util.Vector;

import javax.swing.*;

public class Operatii extends JFrame implements ActionListener{

/**

* 

*/

private static final long serialVersionUID = 1L;

JFrame frame=new JFrame("Prefered Operation");

JTextField txt=new JTextField(10);

JButton adunare= new JButton("Adunare");

JButton inmultire=new JButton("Inmultire");

JButton medie=new JButton("Medie");

ArrayList <Integer> v;

Prelucrare prel;

public int n;

public Operatii()

{

frame.setLayout(new GridBagLayout());

GridBagConstraints grid=new GridBagConstraints();

grid.gridx=0;

grid.gridy=1;

grid.anchor=GridBagConstraints.EAST;

grid.insets=new Insets(5,5,5,5);

frame.add(adunare,grid);

grid.gridx=0;

grid.gridy=2;

grid.anchor=GridBagConstraints.EAST;

grid.insets=new Insets(5,5,5,5);

frame.add(inmultire,grid);

grid.gridx=0;

grid.gridy=3;

grid.anchor=GridBagConstraints.EAST;

grid.insets=new Insets(5,5,5,5);

frame.add(medie,grid);

grid.gridx=0;

grid.gridy=0;

grid.anchor=GridBagConstraints.WEST;

grid.insets=new Insets(5,5,5,5);

frame.add(txt,grid);

adunare.addActionListener(this);

inmultire.addActionListener(this);

medie.addActionListener(this);

frame.setVisible(true);

frame.setSize(500,200);

frame.setDefaultCloseOperation(EXIT_ON_CLOSE);

frame.pack();

frame.setLocationRelativeTo(null);

}

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if(e.getSource()==adunare)

{

v=new ArrayList <Integer>();

GridBagConstraints grid=new GridBagConstraints();

grid.gridx=1;

grid.gridy=1;

JLabel label=new JLabel();

label.setText("adunare");

frame.add(label,grid);

String text;

text=txt.getText();

prel=new Prelucrare(text,v);

v=prel.getVector();

Adunare aduna=new Adunare(v);

Integer rez=0;

rez=aduna.getRezultat();

String srez=null;

srez=rez.toString();

label.setText(srez);

System.out.println(aduna.getRezultat());

}

if(e.getSource() == inmultire)

{

v=new ArrayList <Integer>();

String text;

text=txt.getText();

prel=new Prelucrare(text,v);

GridBagConstraints grid=new GridBagConstraints();

grid.gridx=1;

grid.gridy=2;

JLabel label=new JLabel();

label.setText("inmultire");

Inmultire inmult=new Inmultire(v);

Integer rez;

rez=inmult.getRezultat();

String srez=null;

srez=rez.toString();

label.setText(srez);

frame.add(label,grid);

System.out.println(inmult.getRezultat());

}

if(e.getSource()==medie)

{

v=new ArrayList <Integer>();

String text;

text=txt.getText();

prel=new Prelucrare(text,v);

GridBagConstraints grid=new GridBagConstraints();

grid.gridx=1;

grid.gridy=3;

JLabel label=new JLabel();

frame.add(label,grid);

Inmultire inmult=new Inmultire(v);

Integer rez=0;

rez=((inmult.getRezultat())/(v.size()));

String srez=null;

srez=rez.toString();

label.setText(srez);

System.out.println((inmult.getRezultat())/(v.size()));

}

}

public static void main(String[] args) {

Operatii op=new Operatii();

}

}

package pack;

import java.util.ArrayList;

import java.util.StringTokenizer;

import java.util.Vector;

public class Prelucrare {

public String s;

ArrayList <Integer>v;

public Prelucrare(String s,ArrayList<Integer>v)

{

this.v=v;

this.s=s;

StringTokenizer st;

String numar;

Integer i;

{

st=new StringTokenizer(this.s," ");

while(st.hasMoreTokens())

{

numar=st.nextToken();

i=Integer.parseInt(numar);

if(i==null)

System.out.println("nulllllllllllllllllllllllllllllllllllllllllllllllll");

v.add(i);

System.out.println(v);

}

}

}

public ArrayList<Integer> getVector()

{

return this.v;

}

}