Problem
1. Look at the public interface of the java.lang.System class and discuss whether or not it is cohesive.
2. On which classes does the class Integer in the Java standard library depend?
3. On which classes does the class java.awt.Rectangle in the standard library depend?
4. What relationship is appropriate between the following classes: aggregation, inheritance, or neither?
a. University-Student
b. Student-Teaching Assistant
c. Student-Freshman
d. Student-Professor
e. Car-Door
f. Truck-Vehicle
g. Traffic-Traffic Sign h. Traffic Sign-Color.