4");
else
s2.append("4");
}
else if(e.getSource()==b5)
{
sall.append("5");
l1.setText(sall.toString());
if(f==0)
s1.append("5");
else
s2.append("5");
}
else if(e.getSource()==b6)
{
sall.append("6");
l1.setText(sall.toString());
if(f==0)
s1.append("6");
else
s2.append("6");
}
else if(e.getSource()==b7)
{
sall.append("7");
l1.setText(sall.toString());
if(f==0)
s1.append("7");
else
s2.append("7");
}
else if(e.getSource()==b8)
{
sall.append("8");
l1.setText(sall.toString());
if(f==0)
s1.append("8");
else
s2.append("8");
}
else if(e.getSource()==b9)
{
sall.append("9");
l1.setText(sall.toString());
if(f==0)
s1.append("9");
else
s2.append("9");
}
else if(e.getSource()==b0)
{
sall.append("0");
l1.setText(sall.toString());
if(f==0)
s1.append("0");
else
s2.append("0");
}
else if(e.getSource()==ba)
{
sall.append("+");
l1.setText(sall.toString());
f=1;
x="+";
}
else if(e.getSource()==bb)
{
sall.append("-");
l1.setText(sall.toString());
f=1;
x="-";
}
else if(e.getSource()==bc)
{
sall.append("*");
l1.setText(sall.toString());
f=1;
x="*";
}
else if(e.getSource()==bd)
{
sall.append("/");
l1.setText(sall.toString());
f=1;
x="/";
}
else if(e.getSource()==be)
{
sall.append("=");
int a=Integer.parseInt(s1.toString());
int b=Integer.parseInt(s2.toString());
int c=0;
switch(x)
{
case"+": c=a+b;
break;
case"-": c=a-b;
break;
case"*": c=a*b;
break;
case"/": c=a/b;
break;
}
sall.append(Integer.toString(c));
l1.setText(sall.toString());
}
else if(e.getSource()==bf)
{
f=0;
x="";
sall.delete(0,sall.length());
s1.delete(0,s1.length());
s2.delete(0,s2.length());
l1.setText(sall.toString());
}
}
}