Another confused question about package

[Mike Lin]

set classpath to c:\m,
first ,at path c:\m compile class A

 
public class A{}
 

compile success.
then another class B"

package pa;
public class  B extends A{}

compile failed!
B.java:3: cannot resolve symbol
symbol : class A
location: class pa.B
public class B extends A {}
^
1 error

[John Ip]

Did you put your class B file inside a subdirectory which is the same as your package name?
johnny