char ch $=\text{'}$A$\text{'}$;

switch $($ch$)\{$

case $\text{'}$a$\text{'}$:

case $\text{'}$A$\text{'}$:

System.out.print$($ch$)$; break;

case $\text{'}$b$\text{'}$:

case $\text{'}$B$\text{'}$:

System.out.print$($ch$)$; break;

case $\text{'}$c$\text{'}$:

case $\text{'}$C$\text{'}$:

System.out.print$($ch$)$; break;

case $\text{'}$d$\text{'}$:

case $\text{'}$D$\text{'}$:

System.out.print$($ch$)$;

$\}$