Frame f = new Frame();

Label l1 = new Label("FIRST NUMBER");

Label l2 = new Label("SECOND NUMBER");

Label l3 = new Label("RESULT");

TextField t1 = new TextField();

TextField t2 = new TextField();

TextField t3 = new TextField();

Button b1=new Button("+");

Button b2=new Button("-");

Button b3=new Button("*");

Button b4=new Button("/");

Button b5=new Button("%");

Button b6=new Button("exp");

Button b7=new Button("C");

Button clear = new Button("EXIT");

Mycalculator() {

l1.setBounds(50,100,100,20);

l2.setBounds(50,140,115,20);

l3.setBounds(50,180,100,20);

t1.setBounds(200,100,80,20);

t2.setBounds(200,140,80,20);

t3.setBounds(200,180,80,20);

b1.setBounds(50,220,50,20);

b2.setBounds(110,220,50,20);

b3.setBounds(170,220,50,20);

b4.setBounds(230,220,50,20);

b5.setBounds(50,260,50,20);

b6.setBounds(110,260,50,20);

b7.setBounds(170,260,50,20);

clear.setBounds(230,260,50,20);

f.add(l1); f.add(l2); f.add(l3);

f.add(t1); f.add(t2); f.add(t3);

f.add(b1); f.add(b2); f.add(b3); f.add(b4); f.add(b5); f.add(b6); f.add(b7); f.add(clear);

b1.addActionListener(this);

b2.addActionListener(this);

b3.addActionListener(this);

b4.addActionListener(this);

b5.addActionListener(this);

b6.addActionListener(this);

b7.addActionListener(this);

clear.addActionListener(this);

f.setLayout(null);

f.setVisible(true);

f.setSize(500,500);

}

public void actionPerformed( ActionEvent e) {

float n1 = Float.parseFloat(t1.getText());

float n2 = Float.parseFloat(t2.getText());

if(e.getSource()==b1)

t3.setText(String.valueOf(n1+n2));

if(e.getSource()==b2)

t3.setText(String.valueOf(n1-n2));

if(e.getSource()==b3)

t3.setText(String.valueOf(n1*n2));

if(e.getSource()==b4)

t3.setText(String.valueOf(n1/n2));

if(e.getSource()==b5)

t3.setText(String.valueOf(n1%n2));

if(e.getSource()==b6)

t3.setText(String.valueOf(Math.pow(n1,n2)));

if(e.getSource()==b7){

t1.setText("");

t2.setText("");

t3.setText("");

}

if(e.getSource()==clear){

System.exit(0);

}

}

public static void main(String[] args) {

new Mycalculator();

}

}