How to access Java classes in one package

Question

I have two java files (A.java + B.java) in src / com / example

A.java

package com.example; public class A { public void sayHello(){ System.out.println("Hello"); } } 

B.java

 package com.example; public class B{ public static void main(String... args) { A a = new A(); a.sayHello(); } } 

If I cd one level above src and enter the javac -d classes src / com / example / B.java

I get an error, can't find character A?

Answer 1

javac does not know where to find the source class, you must specify it with the -sourcepath option.

Cm:

 C:\example>mkdir src C:\example>type > src/ C:\example>mkdir src\com\example C:\example>more > src\com\example\A.java package com.example; public class A { } ^C C:\example>more > src\com\example\B.java package com.example; public class B { A a; } ^C C:\example>javac -d C:\example>mkdir classes C:\example>javac -d classes src\com\example\B.java src\com\example\B.java:3: cannot find symbol symbol : class A location: class com.example.B A a; ^ 1 error C:\example>javac -d classes -sourcepath src src\com\example\B.java C:\example> 

Answer 2

This is because Java does not know where to find the source of another file. You need to either cd into the src directory, or point the src directory to -sourcepath .

Answer 3

Try the javac -d classes src / com / example / *. java