GNU Java Training Wheels 2.0: Moving a class into a sub-package

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5.2 Moving a class into a sub-package

Suppose you want to move a class A from no package (the folder ~/jtw-tutorials) to a package called for argument’s sake pkg.inner, the steps from Moving a class into a package needs to be followed, the only difference being that the package spec needs to be changed to package pkg.inner; and the file needs to be moved into the folder pkg/inner. To run the class file you need to invoke the following Make command:

make clean pkg/inner/A.run.

Here is the class definition for the file ~/jtw-tutorials/pkg/inner/A.jtw:

package pkg.inner;
public class A
begin
  public property int data;
  public classVar int data2 = 666;
  public constructor A(int d)
  begin
    data = d;
  end
  public method void meth1()
  begin
    System.out.println("meth1:" + data);
  end
  public method void meth2()
  begin
    System.out.println("meth2:" + data);
  end
  public function void func()
  begin
    System.out.println("func:" + data2);
  end
  beginMain
    var A a1 = new A(123);
    a1.meth1(); // prints out "meth1:123"
    var A a2 = new A(456);
    a2.meth2(); // prints out "meth2:456"
    A.func(); // prints out "func:666"
  endMain
end