Write a java program to fill the $2$D matrix

Q$1)$

$************$

$**,**$

$**,**$

$**,**$

$**,**$

$**************$

Q$2)$ AAAAA

BBBB

CCC

DD

E

Q$3)1$

$10$

$101$

$1010$

$10101$

Q$4)1$

$12$

$123$

$1234$

$12345$