Question
1. (10 pts) What are the diagrams defined in the UML Standard. Give a one or two sentence description of each one. 2. (10 pts)
1. (10 pts) What are the diagrams defined in the UML Standard. Give a one or two sentence description of each one. 2. (10 pts) Given the following code, how should the toString methods in the classes H2ClassA and H2ClassB be written to give the indicated output and take advantage of the natural toString method in H2ClassB?
1 import java.util.ArrayList; 2 3 public class H2ClassA { 4 ArrayList
OUTPUT:
4 3 7 5 99 3
3. (10 pts) How can the following code be corrected? Give at least two good answers.
1 public class H2ClassC { 2 H2ClassC (int a) {} 3 } // end class H2ClassC 4 5 class H2ClassD extends H2ClassC{ 6 } // end class H2ClassD
4. (10 pts) Why does the following code give a compiler error? How should it be fixed?
1 public class H2ClassE { 2 int x, y, z; 3 4 H2ClassE (int a) { 5 x = a; 6 this (5, 12); 7 } 8 9 H2ClassE (int b, int c) { 10 y = b; 11 z = c; 12 } 13 } // end class H2ClassE
5. (10 pts) What is wrong with the following declaration? How should it be fixed?
public static final int myNumber = 17.36;
6. (10 pts) What is wrong with the following code? How should it be fixed?
1 public class H2ClassG { 2 final int x; 3 4 H2ClassG () {} 5 H2ClassG (int a) {x = a;} 6 } // end class H2ClassG
7. (10 pts) What is wrong with the following code? How should it be fixed?
1 public class H2ClassH { 2 final int x; 3 4 int H2ClassH () { 5 if (x == 7) return 1; 6 return 2; 7 } // end 8 } // end class H2ClassH
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