Move Field: Issue with package name

[seyyedaliayati]

Describe the bug
Cannot move fields in classes that don't belong to a package! As you know in Java classes in "src" folder don't need to have a package name! The problem is that I couldn't move field in those classes!
Consider this example:

src/SourceClass.java:

public class SourceClass {
    private int field_for_move = 33;

    public int getFieldForMove(){
        return this.field_for_move;
    }

    public void method_for_move(){
        System.out.println("SourceClass.method_for_move()");
    }
}

src/TargetClass.java:

public class TargetClass {
    
}

Error Print

Traceback (most recent call last):
  File "/home/ali/Documents/dev/CodART/refactorings/move_field.py", line 256, in __get_usage
    source_class, target_class, field = self.get_metadata(program)
  File "/home/ali/Documents/dev/CodART/refactorings/move_field.py", line 36, in get_metadata
    target_class = program.packages[self.target_package_name].classes[self.target_class_name]
KeyError: 'TargetClass'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ali/Documents/dev/CodART/refactorings/move_field.py", line 450, in <module>
    refac = refactoring.move()
  File "/home/ali/Documents/dev/CodART/refactorings/move_field.py", line 330, in move
    usages, program = self.__get_usage()
  File "/home/ali/Documents/dev/CodART/refactorings/move_field.py", line 258, in __get_usage
    raise UnResolvedMetaError("Source or destination not found!")
__main__.UnResolvedMetaError: Source or destination not found!

File Path
refactorings/move_field.py

[seyyedaliayati]

Fixed in 47cd973