Is there a easy way to extract a interface from a Java class, including public methods of super classes? -

is there easy way extract interface java class such includes public methods of super classes. class im trying extract interface has several layers of super classes, each 1 lots of methods. don't need interface each of parent classes.

currently i'm using intelij idea ide. extracts public methods of current class, when extracting interface. if u guys can tell me tool or easy way extract interface, great help.

eclipse doesn't offer superclass methods in "extract interface" refactoring. , correct, because shouldnt implement interface , implement methods in superclass!

you want this:

public interface interfaceforb {   void b();   void a(); }  public class {   public void a(){} }  public class b extends implements interfaceforb{   public void b(){} } 

yes, compiles. it's awful style, because says, b implements interface, not true, because a() method implemented in class a.

my strong advice: use refactorings offered intellij, extract methods interface really implemented actual class. implement b given example implements all interface methods:

public class b extends implements interfaceforb{   public void b(){}   public void a(){ super(); } } 

and intellij (and eclipse) can extract interface way want it.