I have made a keyTyped event java program. Now it display square for each single number i typed through keyborad.**What i want is this:**

- when i type 1 answer to be displayed 1
- Again when i type 2 answer to be 144, not 4.

So any Idea how to get it right (I don't know how to combine the previously entered key with new ones)

```
private void simpleNumberKeyTyped(java.awt.event.KeyEvent evt) {
int n=0;
char k=evt.getKeyChar();
if (!(k>='0' && k<='9'))
evt.consume();
else
{
if(k=='0')
n=0;
if(k=='1')
n=1;
if(k=='2')
n=2;
if(k=='3')
n=3;
if(k=='4')
n=4;
if(k=='5')
n=5;
if(k=='6')
n=6;
if(k=='7')
n=7;
if(k=='8')
n=8;
if(k=='9')
n=9;
}
int ans = n * n;
square.setText(String.valueOf(ans));
}
`
```