Ошибка при использовании метода 1 класса во 2 классе

public LinearLayout LayoutOfScroll;
public EditText edBudget;
public TextView tvZatrati;
public TextView tvOstatok;
public FloatingActionButton fab_add;
public int Budget = 0;                    
public int Zatrati = 0;                  
public int Ostatok = 0;                  
public String etAlertDialod;   

Метод очистки в 1 классе:

public void FAB_clear_method(){
    LayoutOfScroll.removeAllViews();    
    Budget = 0;                         
    edBudget.setText("");               
    Zatrati = 0;                  
    tvZatrati.setText("0");             
    Ostatok = 0;                       
    tvOstatok.setText("0");             
}

Использование этого метода во 2 классе:

ContentFragment object = new ContentFragment();  
object.FAB_clear_method();      

Код ошибки:

FATAL EXCEPTION: main Process: com.example.evgeny.ShoppingBudget, PID: 3705
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.LinearLayout.removeAllViews()' on a null object reference
        at com.example.evgeny.ShoppingBudget.fragments.ContentFragment.FAB_clear_method(ContentFragment.java:151)
        at com.example.evgeny.ShoppingBudget.fragments.SavedListsFragment.onItemClick(SavedListsFragment.java:63)
        at android.widget.AdapterView.performItemClick(AdapterView.java:310)
        at android.widget.AbsListView.performItemClick(AbsListView.java:1145)
        at android.widget.AbsListView$PerformClick.run(AbsListView.java:3042)
        at android.widget.AbsListView$3.run(AbsListView.java:3879)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)