BR$18$

$"$:

$.$

EmployeeQuery.java

Employee.java $$

EmployeeQuery.java $$ API $""$ getName$$ getAddress $$ getCity $$

$$ Employee.java $$ if $$ Employee.java $$ EmployeeQuery.java $$

$$ if $$ EmployeeQuery.java $$ Employee.java $$

$3$: $$

$$ java.lang.reflect $$

$$ String s $=$ new String$()$

$$ cls $=$ s$.$getClass$()$;

$$ cls $$ s $$

s $$

$=$ cls$.$getMethod$($methodName$,$ parameterArray$)$;