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import java.awt.event;
import java.applet.Applet;
import java.applet.Applet;
public class calculadora extends Applet {
public void init()
{
Interfaz();
}
public void Interfaz()
{
lab_1 = new Label (); lab_1.setBounds(20,60,260,30); lab_1.setFont(new Font("serif", Font.BOLD, 20)); lab_1.setBackground(Color.lightGray);
lab_2 = new Label ("** Calculadora **"); lab_2.setBounds(70,30,160,20); lab_2.setFont(new Font("serif", Font.BOLD, 20)); lab_2.setBackground(Color.lightGray); lab_2.setForeground(Color.blue);
tex_1 = new TextField (); tex_1.setBounds(20,100,260,30); tex_1.setFont(new Font("serif", Font.BOLD, 20)); tex_1.setEditable(false);
but_0 = new Button("0"); but_0.setBounds(20,290,92,40); but_0.setFont(new Font("serif", Font.BOLD, 20)); but_0.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"0"); }});
but_1 = new Button("1"); but_1.setBounds(20,150,46,46); but_1.setFont(new Font("serif", Font.BOLD, 20)); but_1.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"1"); }});
but_2 = new Button("2"); but_2.setBounds(66,150,46,46); but_2.setFont(new Font("serif", Font.BOLD, 20)); but_2.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"2"); }});
but_3 = new Button("3"); but_3.setBounds(112,150,46,46); but_3.setFont(new Font("serif", Font.BOLD, 20)); but_3.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"3"); }});
but_4 = new Button("4"); but_4.setBounds(20,196,46,46); but_4.setFont(new Font("serif", Font.BOLD, 20)); but_4.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"4"); }});
but_5 = new Button("5"); but_5.setBounds(66,196,46,46); but_5.setFont(new Font("serif", Font.BOLD, 20)); but_5.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"5"); }});
but_6 = new Button("6"); but_6.setBounds(112,196,46,46); but_6.setFont(new Font("serif", Font.BOLD, 20)); but_6.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"6"); }});
but_7 = new Button("7"); but_7.setBounds(20,242,46,46); but_7.setFont(new Font("serif", Font.BOLD, 20)); but_7.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"7"); }});
but_8 = new Button("8"); but_8.setBounds(66,242,46,46); but_8.setFont(new Font("serif", Font.BOLD, 20)); but_8.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"8"); }});
but_9 = new Button("9"); but_9.setBounds(112,242,46,46); but_9.setFont(new Font("serif", Font.BOLD, 20)); but_9.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"9"); }});
but_pun = new Button(","); but_pun.setBounds(112,290,46,40); but_pun.setFont(new Font("serif", Font.BOLD, 20)); but_pun.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ tex_1.setText(tex_1.getText()+"."); }});
but_mas = new Button("+"); but_mas.setBounds(188,242,46,92); but_mas.setFont(new Font("serif", Font.BOLD, 20)); but_mas.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ mas(); }});
but_men = new Button("-"); but_men.setBounds(234,288,46,46); but_men.setFont(new Font("serif", Font.BOLD, 20)); but_men.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ menos(); }});
but_por = new Button("*"); but_por.setBounds(188,196,46,46); but_por.setFont(new Font("serif", Font.BOLD, 20)); but_por.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ por(); }});
but_div = new Button("/"); but_div.setBounds(234,196,46,46); but_div.setFont(new Font("serif", Font.BOLD, 20)); but_div.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ divide(); }});
but_mod = new Button("mod"); but_mod.setBounds(234,242,46,46); but_mod.setFont(new Font("serif", Font.BOLD, 20)); but_mod.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ mod(); }});
but_igu = new Button("="); but_igu.setBounds(75,345,150,55); but_igu.setFont(new Font("serif", Font.BOLD, 20)); but_igu.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ resultado(); }});
but_mm = new Button("+/-"); but_mm.setBounds(234,150,46,42); but_mm.setFont(new Font("serif", Font.BOLD, 20)); but_mm.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ mm(); }});
but_bor = new Button("C A"); but_bor.setBounds(188,150,46,42); but_bor.setFont(new Font("serif", Font.BOLD, 20)); but_bor.addActionListener (new ActionListener(){ public void actionPerformed (ActionEvent e){ borrar(); }});
add(lab_2);
add(lab_1);
add(tex_1);
add(but_1); add(but_2); add(but_3);
add(but_4); add(but_5); add(but_6);
add(but_7); add(but_8); add(but_9);
add(but_0); add(but_pun);
add(but_por); add(but_div);
add(but_mas); add(but_mod);
add(but_igu);
add(but_bot); add(but_mm);
setBackgroudn(Color.LIGHT_GRAY);
setLayout(null);
}
public void mm()
{
double num;
num=Double.parseDouble(tex_1.getText());
num=num*(-1);
tex_1.setText(Double.toString(num));
}
public void mas()
{
ope = "+";
mat[0]=Double.parseDouble(tex_1.getText());
lab_1.setText(tex_1.getText()+ope);
tex_1.setText("");
}
public void menos()
{
ope ="-";
mat[0]=Double.parseDouble(tex_1.getText());
lab_1.setText(tex_1.getText()+ope);
tex_1.setText("");
}
public void por()
{
ope ="*";
mat[0]=Double.parseDouble(tex_1.getText());
lab_1.setText(tex_1.getText()+ope);
tex_1.setText("");
}
public void divide()
{
ope ="/";
mat[0]=Double.parseDouble(tex_1.getText());
lab_1.setText(tex_1.getText()+ope);
tex_1.setText("");
}
public void mod()
{
ope ="m";
mat[0]=Double.parseDouble(tex_1.getText());
lab_1.setText(tex_1.getText()+"mod");
tex_1.setText("");
}
public void borrar()
{
mat[0]=mat[1]=mat[2]=0;
lab_1.setText("No hay operacion....");
tex_1.setText("");
ope="0";
}
public void resultado()
{
if (tex_1.getText().equals(""))
{
mat[1]=0;
}
else
{
mat[1]=Double.parseDouble(tex_1.getText());
lab_1.setText(Double.toString(mat[0])+ope+Double.toString(mat[1]));
switch (ope)
{
case "+":
mat[2]=mat[0]+mat[1];
tex_1.setText(Double.toString(mat[2]));
break;
case "-":
mat[2]=mat[0]-mat[1];
tex_1.setText(Double.toString(mat[2]));
break;
case "*":
mat[2]=mat[0]*mat[1];
tex_1.setText(Double.toString(mat[2]));
break;
case "/":
mat[2]=mat[0]/mat[1];
tex_1.setText(Double.toString(mat[2]));
break;
case "m":
mat[2]=mat[0]%mat[1];
tex_1.setText(Double.toString(mat[2]));
break;
}
mat[0]=mat[2];
mat[1]=0;
}
}
TextField tex_1;
label lab_1,lab_2;
button but_0,but_1,but_2,but_3,but_4,but_5,but_6,but_7,but_8,but_9,but_mas,but_men,but_por,but_div,but_mod,but_igu,but_bor,but_pun,but_mm;
double[] mat =new double[] {0,0,0};
char ope="0";
}