Java coding

9.1 Here is an interface public interface Foo public void fooMethod) Is the fooMethod0 method abstract? (1 point) Why or why not? (l point) 9.2 A is an abstract class ( poin): X Y, and Z are interfaces (l poin): B is a regular (ot abstract) class and inherits from A and X (l point). C is a regular (not abstract) class and inherits from B. Y, and Z (1 point). Write all the class and interface headers 1 line only for each-(4 points) 9.3 Is there an error in the following code? (1 point) Explain your answer (1 point) iport java. awt.Graphics. public abstract class Shape public String getShape) retum Square public abstract void draw( Graphics g 9.4 Write one line of code so that we open the file "languages.tst" for appending (2 points)